In definition:

bei'u'i (exp!)
unary mekso operator: nth Bernoulli number Bn of the second kind (B1 = +1/2 = >0).
brivo
x1 is a predicate word defined as such by its word shape, signifying relation x2 (n-ary property) in language x3
ci'ai'u (exp!)
Mekso unary or binary operator: n-set or integer interval; in unary form, it maps a nonnegative integer X1 = n to the set \1, \dots , n\ (fully, officially, and precisely: the intersection of (a) the set of exactly all positive integers with (b) the closed ordered interval [1, n] such that n \geq 1; see notes for other n); in binary form, it maps ordered inputs (X1, X= (m, n) to the intersection of (a) the set of exactly all integers with (b) the closed ordered interval [m, n].
ci'au'i (exp!)
mekso at-most-4-ary operator: integer lattice ball; the set of all points belonging to the intersection of Zn with the closure of the ball that is centered on X1 and has radius X2 in metric X3, where Z is the set of all integers and where, for any set A and non-negative integer n, An is the set of all n-tuples such that each coordinate/entry/term belongs to A, and where the dimensionality n = X4..
cu'o
convert number to probability selbri; event x1 has probability (n) of occurring under cond. x2.
cu'oi'e
convert number to statistical odds selbri; event x1 (nu) has statistical odds (n) of occurring (versus not occuring) under conditions x2.
da'a
digit/number: all except n; all but n; default 1.
de'ei
on (n)-th day from a given point (by default from today)
de'i'e
in the year N.
du'a'e (exp!)
mekso n-ary ordered operator: structure creator/ordered tuple, 'endow'; the structure formed by underlying set X1 (as) endowed with element, order, quoted operator, etc. X2, X3, ...
emna
x1 (n-ary property) is applied to sumti x2, x3, ...
fa'ai (exp!)
mathematical ordered n-ary operator: (pointwise) functional left composition; X1 \circ X.
facni
x1 is an n-ary operator/map which is distributive/linear/homomorphic in or over or from space/structure x2, mapping to space or structure x3, thereby producing a new space/structure x4 which is the 'union' of x2 and x3 endowed with x1; x1 distributes over/through all of the operators of x2.
fau'e
iterated function left-composition with self: f∘f∘...∘f, n times.
fe'i
n-ary mathematical operator: divided by; division operator; [(((a / b) / c) / ...)].
fi'u
digit/number: fraction slash; default "/n" => 1/n, "n/" => n/1, or "/" alone => golden ratio.
fu'a'ai (exp!)
digit/number: first Foias' constant; the unique value of x1 such that xn\to\infty as n\to\infty for xn+1 = \left(1 + \frac1xn\right)^n; such x1 = 1.187…
fu'u
n-ary mathematical operator: elliptical/unspecified mathematical expression (mex) operator.
ga'u'au
mekso n-ary operator: append contravariant (upper) indices to tensor
gei'au (exp!)
mekso 7-ary operator: for input (X1 = z, X2 = (ai)= (bj)= p, X5 = q, X6 = h1, X= h2), this word/function outputs/yields \sumn=0^\infty (((\prodi = 1p (ne'o'o(ai,n,1,h= 1q (ne'o'o(bj,n,1,h; by default, X6 = 1 = X7 unless explicitly specified otherwise.
gravnutnoia
x1 is Newton's constant of universal gravitation/G/big G [approximately equal to: 6.67×10(−11) N·(m/kg)2 ] expressed in units x2 (default: unitless/dimensionless and equal to 1) in paradigm/system/metaphysics/universe x3 (default: this, our actual, physical universe)
ji'i'u (exp!)
mekso, at-most-5-ary operator: a rounding function; ordered input list is (x,n,t,m,b) and the output is sgn(x) bt roundn (b(-t) abs(x)), with rounding preference n and where the fractional part of b(-t) abs(x) being equal to 1/2 causes the roundn ( ) function to map b(-t) abs(x) to the nearest integer of form 2Z+m, for base b (determined by context if not explicitly input) and some integer Z (determined by context).
joi'i (exp!)
mekso string operator (n-ary): formal right-concatenation; X1 + X, where Xi is a string/word/text/character/letteral/lerfu/quoted utterance (quote appropriately iff necessary; preserve and be careful about the use-vs.-mention distinction) for all i.
ka'oi
x1 (ka) is obtained from x2 (ka) by uncurrying the first N places
ka'oi'i (exp!)
convert bridi into n-ary property claim: xn is such that it fills the n-th occurrence of ce'u in [bridi].
kaunmei
x1 (collection, body, set, mass, tuple, n-some, etc.) is x2 (li; default: 1) indivisible/atomic/elementary/basic discrete entities (or particles) of type x3 in composition/content, by standard x4; the count of instances of x3 in x1 is x2 by standard x4.
ke'u'i
accepts number (n) after: repeat last sumti up to n times
ku'au'a (exp!)
mekso (n+1)-ary operator: q-analog converter - the ath analog of b (quoted operator) applied to operands c, d, ...
mai'u'e (exp!)
mekso unary operator: for permutation X1 as input, the output is (-1)^N(X1), where N(s) is the number of inversions in permutation s.
mai'u'ei (exp!)
mekso unary operator: Levi-Civita symbol; for input n-tuple (a1, a ... , an), where n is a strictly positive integer, the output is \varepsilona, where \varepsilon is the Levi-Civita symbol under the convention of mapping (1, 2, ..., n) to 1.
me'ei'o (exp!)
mekso n-ary operator: interleave sequences
mei
convert number to cardinality selbri; x1 is a mass formed from a set x2 of n members, one or more of which is/are x3, measured relative to the set x4.
mei'ai
x1 is (n) less than x2 in metric x3 [ni, default cardinality]
moi
convert number to ordinal selbri; x1 is (n)th member of set x2 ordered by rule x3.
moi'u
x1 is (n)th member of alphabet/set x2 ordered by rule x3, where the count begins at x4.
ni'a'au
mekso n-ary operator: append covariant (lower) indices to tensor
ni'e'ei (exp!)
digit/number: Niven's greatest-exponent prime factorization constant \limn\to\infty\mathrmavg
ny
letteral for n.
pau'au (exp!)
ternary mekso operator: p-adic valuation; outputs (positive) infinity if x1 = 0 and, else, outputs sup(Set(k: k is a nonnegative integer, and ((1 - x3)x divides x1)), where pn is the nth prime (such that p1 = 2).
pi'a
n-ary mathematical operator: operands are vectors to be treated as matrix rows.
pi'i
n-ary mathematical operator: times; multiplication operator; [(((a * b) * c) * ...)].
pi'u'e (exp!)
mekso n-ary operator: generate ordered tuple/list from inputs; pi'u'e(x1, x= (x1, x, pi'u'e(x1, x= (x1, x, etc.
po'i'ei (exp!)
n-ary mekso operator: for an input of ordered list of ordered pairs ((X1, Y, it outputs formal generalized rational function (x - X1)^Y in the adjoined indeterminate (here: x).
ru'ei (exp!)
n-ary operator: n-ary magma/group/ring operator a*b = ab`
sa'i
n-ary mathematical operator: operands are vectors to be treated as matrix columns.
sau'i (exp!)
mekso n-ary operator: reciprocal of the sum of the reciprocal of each of X1, X2, ..., Xn (for any natural number n); 1/((1/X1) + (1/X.
se'ai'e (exp!)
(n, 1, 2, \dots, n-2, n - 1)st conversion.
se'au'e (exp!)
(2, 3, \dots, n-1, n, 1)st conversion.
selbrivla
x1 is a lexically defined predicate word (predicate particles included), signifying relation x2 (n-ary property) in language x3
se'oi'oi
Conversion: Switch n and x1 in MOI (or MOI*) cmavo so that the submitted value (previous x1) outputs the number(s) (previous n) associated with it.
setxeve
x1 (predicate, relation, function, set of n-tuples) is the converse/conversion/complement/transpose/commutation/functional-'permutation' of x2 (same typing as x1), as defined on set/object/space/graph x4, with argument/input slots permuted via function/operator/marker/permutation/(group) action x3.
si'e
convert number to portion selbri; x1 is an (n)th portion of mass/totality x2; (cf. gunma).
si'oi'e (exp!)
n-ary mekso operator: Logistical growth/cumulative function, sigmoid function; (X3 / (1 + e^(-X.
slakypaucibmei
m1 is trimoraic/is the mass of three morae formed from set of mora m2 whose n member(s) are m3=p1.
slakypaupavmei
m1 is monomoraic/is the mass of one morae formed from set of morae m2 whose n member(s) are m3=p1.
slakypaurelmei
m1 is dimoraic/is the mass of two morae formed from set of morae m2 whose n member(s) are m3=p1.
so'e'u (exp!)
digit/number: n (default: 1 or 1/2 atomic units as the case may be) more than half; barely a majority; a slight majority.
su'i
n-ary mathematical operator: plus; addition operator; [(((a + b) + c) + ...)].
su'i'o (exp!)
mekso unary or binary operator: ordered inputs (n, b) where n and b are nonnegative integers and b > 1; output is the ultimate digital root of n in base-b.
te'au
iterated Cartesian product with self: A × A × ... × A, n times.
te'oi'i (exp!)
mekso ordered/non-commutative n-ary operator: tensor product/exterior product (of tensors); letting "@" denote the tensor product, A1 @ A2 @...@ An .
terbrisu'a
x1 is the place structure of predicate relation x2 (n-ary ka, me'ei, or la'e zo)
ti'u'a
at N o'clock; at the hour N of the day.
ti'u'e
at the minute N of the hour.
ti'u'i
at the second N of the minute.
tranytrano
t1 is a quantity of/contains/is made of nitrogen [N].
va'e
convert number to scalar selbri; x1 is at (n)th position on scale x2.
va'ei
converts number to scalar tag; specifies the value on fuzzy logic scale; to the degree (n) on scale ...
vlali'ifa'o
x1 (se'e?) is a line terminator (eg \n, CRLF, ...) of file(s) x2
vu'u
n-ary mathematical operator: minus; subtraction operator; [(((a - b) - c) - ...)].
xo'ei (exp!)
unary mekso operator: produces a string of n consecutive "xo'e"'s, treated as digits (concatenated into a single string of digits)
xoi'ei'a
Toggles grammar so that every mention of a number n is interpreted as "at least n".
zau'ei
x1 is (n) more than x2 in metric x3 [ni, default cardinality]
ze'e'a
n-Merge Conversion: placed immediately before a selbri, merges x2 and all xa places.
ze'e'au
n-Merge Conversion: placed immediately before a selbri, merges all xa places.
ze'e'e
n-Merge Conversion: placed immediately before a selbri, merges x5 and all xa places.
ze'e'i
n-Merge Conversion: placed immediately before a selbri, merges x1 and all xa places.
ze'e'o
n-Merge Conversion: placed immediately before a selbri, merges x4 and all xa places.
ze'e'u
n-Merge Conversion: placed immediately before a selbri, merges x3 and all xa places.
zei'o
Delete all sumti slots of the immediately preceding word which are not explicitly filled excepting the first n (specified by subscript; contextless default: n=0).

In notes:

bai'i'i (exp!)
mekso operator: in ordered tuple/list/vector/sequence X1, replace the X2th entry with term X3 of appropriate type, and leave all other entries untouched (optional: where the index for the very first/leading/header entry is X4).
bi'ei (exp!)
number/digit: 2(2×5/3) = 8×(2(1/3)).
bi'oi'au (exp!)
digit/number: interval/range indicator for significant digits (determined by lesser endpoint).
ca'o'e (exp!)
mekso 4-nary operator: spherical harmonics on colatitudinal/polar angle a and azimuthal/longitudinal angle b of unassociated order c and associated order d.
ce'ei'oi
BIhI argument modifier: indicates dimensionality/length of tuple
cia'o'e
mekso 4-nary operator: spherical harmonics on colatitudinal/polar angle a and azimuthal/longitudinal angle b of unassociated order c and associated order d.
ci'ima'u (comp!)
number: uncountably infinite of some sort or infinite in the sense of satisfying the Generalized Continuum Hypothesis.
cnanfadi
x1 (li; number/quantity) is the weighted quasi-arithmetic mean/generalized f-mean of/on data x2 (completely specified ordered multiset/list) using function x3 (defaults according to the notes; if it is an extended-real number, then it has a particular interpretation according to the Notes) with weights x4 (completely specified ordered multiset/list with same cardinality/length as x2; defaults according to Notes).
cnanlagau
x1 is the generalized arithmetic-geometric mean of the elements of the 2-element set x2 (set; cardinality must be 2) of order x3 (either single extended-real number xor an unordered pair/2-element set of extended-real numbers).
cnanlime
x1 is the generalized weighted Lehmer mean of data x2 (completely specified ordered multiset/list of numbers) of Lehmer order x3 (either a single extended-real number xor an ordered pair of two extended-real numbers) with weights x4 (completely specified ordered multiset/list of numbers with the same cardinality as x2; defaults according to the Notes).
cplancu
x1 (person(s)) is/are adopted by x2 (individual, family, tribe/clan, community, team, institution, etc.) into the latter's overarching family/clan/tribe/community/team/institution/etc. x4 in(to) role/relation x3 or an analog thereof via means/law/norm/socio-cultural or other mechanism x5; x2 adopts x1 into x2's family11.
cpolinomi'a
x1 is a formal polynomial with coefficients x2 (ordered list) of degree x3 (li; nonnegative integer) over structure/ring x4 (to which coefficients x2 all belong) and in indeterminant x5.
cu'au'ei (exp!)
mekso binary/unary operator: multinomial coefficient/binomial coefficient/choose
daigno
x1 (ordered list) is a sampling of entries of matrix/tensor x2 in which exactly one entry is sampled from each row and/or column (etc.) between entries x3 (list; default: the largest 'square'/'hypercubic' sampling possible in the entire tensor starting with the first entry, see notes) inclusively following selection procedure/rule/function/order x4 (default: diagonally, see notes), where the tensor/matrix is expressed in basis/under conditions x5
di'ei'o'au (exp!)
mathematical ternary operator: Dirichlet convolution (a×b)(c)
dutso
x1 is clockwise/right-turn-direction of[/to] x2 along/following track x3 [path] in frame of reference x4 (where the axis is within the region defined by the track as the boundary, as viewed from and defined by view(er) x4; see notes); x1 is locally to the right of x2, according to x4, constrained along x3; x1 is along a right turn from x2 along path x3, as viewed in frame x4.
eiksyspespe
x1 is a spouse of x2's former spouse by law/custom/standard x3.
endi
x1 (digit string/byte, storage system, convention) has endianness x2 ("ce'o" sequence of numbers (li); description (ka?)); x1 is x2-endian.
fancysuksa
function f1 is discontinuous/abrupt/sharply changes locally (in output) on/at s2 (set), with abruptness of type x3 (default: 1)
fau'i (exp!)
mekso ternary operator: inverse function of input function X1 with respect to its input X2, taken on branch or restricted domain X3 ("domain" being of X1).
fe'ei (exp!)
binary mekso operator: divided by (fraction): a/(b...)
fi'au
mekso operator: continued fraction, Kettenbruch notation; for ordered input (X1, X, where: X1 is an ordered pair of functions and X2 is a free or dummy variable/input/index which ranges through set X3 in order(ing) X4, the result is K(X for Kettenbruch notation K.
flaukse
x1 is the vector flux (flow) of quantity/substance (count) x2 through (geometric/imaginary) hypersurface/embedded manifold x3 per unit hyperarea per unit time.
ga'ai (exp!)
unary mekso operator: Lorentz-Einstein gamma factor \frac1\sqrt1-|X|2 for input X.
ga'au (exp!)
digit/number: Euler–Mascheroni constant, usually denoted by lowercase gamma (γ); approximately 0.5772156649 (in decimal).
go'ai
last bridi (with its modifiers)
grafnseljimcnkipliiu
x1 is a 'quipyew' tree graph with special node x2, on nodes x3 (set of points; includes x2), with edges x4 (set of ordered pairs of nodes), and with other properties x5.
izyng
Ising
ji'e'ai (exp!)
mekso unary operator: determinant, det(A)
jorlge
x1 is the result of applying logical connective/conjunction x2 to the terms of the ordered list x3 in the order given, in system x4
jorny'utka
x1 is joined/connected to/with something which is joined/connected to/with something which ... which is joined/connected to/with something which is joined/connected to/with x2 via intermediate things/steps x3 (ce'o), with respective points/loci of (con)juncture x4 (ce'o).
ju'au
semi-mathematical binary operator: named number base operator/interpreter
jvencuio
x1 is an eventual/tail(-end) x2 of x3; x3 eventually is/has/is characterized by x2(/-ic/ness)
jvingapoi
x1 (contestant) comes in x2th (integer; typically positive but no more than the length/cardinality of x4; lesser values represent better performance) place in contest x3 against opponents x4 (complete list (not mecessarily ordered) or set of all qualifying competitors); x1 has rank x2 in contest/conpetition/game/tournament/campaign x3.
ka'ei (exp!)
abstractor: predicate abstractor. x1 is the predicate expressed by [bridi], using bo'a, bo'e, etc for variables.
karncau
x1=c1=k1 is separate from / not with x2=c2=k2 in state/condition/enterprise x3=k3; x1 is individual / alone / separate.
kei'ai
mekso style converter: elementwise application of operator
ki'irgrafu
x1 is a relation space formed from elements/nodes in set x2 and relationship x3 which connects them.
klojere
x1 (set/space) is closed under operator/relation x2; x2 has closure in x1.
ko'ai
Creates a predicate abstraction sumti out of a full bridi clause, binding all the necessary lambda variables to the ko'a-ko'u pronoun series.
ku'ai'i
empty/vacuous selbri
lucpa
x1 (person(s)) is/are adopted by x2 (individual, family, tribe/clan, community, team, institution, etc.) into the latter's overarching family/clan/tribe/community/team/institution/etc. x4 in(to) role/relation x3 or an analog thereof via means/law/norm/socio-cultural or other mechanism x5; x2 adopts x1 into x2's family11.
mai'e'e (exp!)
digit/number: Meissel-Mertens constant M ≈ 0.2614972128476427837554268386086958590516…
mi'i'au (exp!)
digit/number: interval/range indicator for significant digits (determined by midpoint).
mu'au'oi
Discursive: resuming/continuing example - start new example
mu'i'ai (exp!)
digit/number: Hafner-Sarnak-McCurley coprime determinants limiting probability constant; h ≈ 0.3532363719…
mumtartai
x1 is a five-pointed star; x1 is a pentagram.
ni'e'oi (exp!)
digit/number: Niven's smallest-exponent prime factorization constant c = zeta(3/2)/zeta(3) ≈ 2.1732543125195541382370898404…
pavysmi
x1 is the one(-like) element/multiplicative identity of structure/ring x2; often is denoted by ' 1R ' or ' IR ' or by (when context is obvious) '1' or 'I', for structure/ring R (given by x2).
paxra
x1 is a cross-section (substance viewed cross-sectionally) of object x2 made from perspective/side/orientation/along (and perpendicular to) axis x3 (this determines the shape) and made in hyperplane/at depth/to contain/consisting of particular slice x4 (this determines the size and content), of dimensionality x5 [li; integer greater than -2, less than or equal to the dimensionality of x2]; x1 is the result and arranged content of the intersection of x2 with an (x5) -dimensional hyperplane that is perpendicular to axis x3 and along it such that it has a depth (approximately x4) in x2 that allows it to contain a particular slice (of) x4
pei'e'a (exp!)
at-most-3-ary mekso operator: "integer exponent" for X1 divided by X2 in algebraic structure X3
pi'au'e (exp!)
mekso ternary operator: extract digit from number; X2nd macrodigit/term of number/tuple X1 when X1 is expressed in base/basis X3.
pi'ei'au (exp!)
mathematical ternary operator: not-greater-prime-counting function
rai'i (exp!)
mekso (2 or 3)-ary operator: maximum/minimum/extreme element; ordered list of extreme elements of the set underlying ordered set/structure X1 in direction X2 of list length X3 (default: 1)
rirny'utka'au
x1 is direct ancestor/mentorial-ancestor of x2 of order x3 (li; nonnegative integer) in graph/network of ancestry (family tree) x4 (defaults to maximal option), where x3 is the smallest possible number which is so constrained; x1 is the x3th-great-grandparent of x2.
se'au (exp!)
mathematical quinary operator; big operator: left sequence notation/converter - operator a, sequence b defined as a function on index/argument/variable/parameter c, in set d, under ordering e
sei'au
terbri editor: passes the terbri value through the quoted function so that the sumti that fills it really is filling the output of the function
smisi'u
The members of x1=simx1 (set) resemble one another in property x2=simx2.
so'i'a (exp!)
digit/number: slightly less than a minimal-majority; the maximal-minority.
su'i'e (exp!)
mekso unary operator: digital addition.
tai'e'i (exp!)
mekso unary operator: basic Schlafli symbol composer (defined only on ordered lists)
tamseingu
Target node x1 and primary subject node x4 belong to the same (single) strictly-directed, connected tree graph/network/hierarchy or are related by relation scheme x5 such that x1 has coordinates (x2, x and x4 has coordinates (0, 0) according to the labelling scheme which is described in the notes hereof.
ta'u'i
Copy and paste the overall seltau of immediately preceding sumti at this location.
tcaudu
x1 is the formatted address for something - (with format) starting with x2, which is an address/locality/administrative subunit/region which belongs to slightly broader address/locality/administrative subunit/region x3, which in turn itself belongs to a slightly broader address/locality/administrative subunit/region x4, \dots (etc.).
tseingu
x1 (node in a tree graph) and x2 (node in the same tree graph) have an essentially unique most recent (graph-nearest) common ancestor node A such that x3 [nonnegative integer; li] is the minimum element of the set consisting only of d(A, x1) and of d(A, x2), and such that x4 [integer; li] is d(A, x1) - d(A, x2), where d is the graph geodesic distance (defined to be infinite if nodes are not connected in the correct direction).
utka
x1 and x2 are path-linked by binary predicate x3 (ka) via intermediate steps x4 (ce'o; (ordered) list).
vei'e (exp!)
mekso binary operator – quotient from integer-division: sgn(X1) sgn(X2) ((abs(X1) - (abs(X1) \% X.
vei'u (exp!)
binary mekso operator: mod(ulus)/remainder; X1 \% X2, \,\,\, X1 (mod(X2)).
ve'oi (exp!)
Close all open mathematical brackets.
vonrafpemjvo
x1 is a Lojban compound-word idiom made of four combining forms (rafsi); x1 is a "Lojbanic chengyu/yojijukugo".
xa'ei'o
binary mekso operator: Let the inputs X1 and X2 be sets in the same universal set O; then the result of this operator applied to them is X1^c \cup X, where for any A \subseteq O, Ac = O \setminus A.
xau'o'o
mekso convention cancellation
xo'au (exp!)
pro-numeral: the most-recently mentioned full/complete numerical or mathematical string/expression.
zau'u (exp!)
digit/number: arbitrarily large/great/increased/many (finite but as big as desired/allowed).
zdeltakronekre
x1 is a Kronecker delta function defined on structure x2 which evaluates to one for any argument belonging to subset x3 and which evaluates to zero otherwise
ze'ai'au
unary mekso operator: reverse ordered list/tuple X1.
ze'ai'e (exp!)
selbri conversion: permute all terbri so as to be exactly backward.
ze'au'e (exp!)
last-th conversion: switches the last terbri with the first one.
zucna
x1 is counterclockwise/left-turn-direction of[/to] x2 along/following track x3 [path] in frame of reference x4 (where the axis is within the region defined by the track as the boundary, as viewed from and defined by view(er) x4; see notes); x1 is locally to the left of x2, according to x4, constrained along x3; x1 is along a left turn from x2 along path x3, as viewed in frame x4.