On gloss:

cy
letteral for c.
kei'i in sense "set theoretic operator (mekso, connective): set complement"
non-logical connective/mekso operator - of arity only 1 xor 2: set (absolute) complement, or set exclusion (relative complement). Unary: X2 ^C; binary: X1\setminusX.
kei'i in sense "set theoretic operator (mekso, connective): set exclusion"
non-logical connective/mekso operator - of arity only 1 xor 2: set (absolute) complement, or set exclusion (relative complement). Unary: X2 ^C; binary: X1\setminusX.

In definition:

fe'i
n-ary mathematical operator: divided by; division operator; [(((a / b) / c) / ...)].
gai
digit/number: hex digit C (decimal 12) [twelve].
gei
trinary mathematical operator: order of magnitude/value/base; [b * (c to the a power)].
pi'i
n-ary mathematical operator: times; multiplication operator; [(((a * b) * c) * ...)].
ri'o
trinary mathematical operator: [integral of a with respect to b over range c].
sa'o
trinary mathematical operator: [derivative of a with respect to b of degree c].
si'i
trinary mathematical operator: [sigma summation of a using variable b over range c].
su'i
n-ary mathematical operator: plus; addition operator; [(((a + b) + c) + ...)].
vu'u
n-ary mathematical operator: minus; subtraction operator; [(((a - b) - c) - ...)].
su'ifa'uvu'u (comp!)
mekso operator: plus or minus with order important, (((a±b)±c)±...±z)
su'ijavu'u (comp!)
mekso operator: plus or minus, (((a±b)±c)±...±z)
ku'urmudri
m1 is a quantity of/is made of/contains conifer/pine/fir wood/lumber from tree(s) of species/strain m2=c=2.
tolsraseldau
d2=s2 is a con/contra-argument (C) against argument s2, by arguer d1.
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.
de'au'u (exp!)
mekso ternary operator: positive super-logarithm; the super-logarithm (inverse operator of hyper-operator with respect to "height" of power tower) of a with base b and of order c-2.
di'ei'o'au (exp!)
mathematical ternary operator: Dirichlet convolution (a×b)(c)
fe'au'u (exp!)
mekso ternary operator: positive super-root; the bth super-root (inverse operator of hyper-operator with respect to base) of a of order c-2.
gau'a (exp!)
mekso (no-more-than-4-ary) operator: Gaussian function f(x, a, b, c) = c e-((x-a).
je'e'e (exp!)
mekso operator: associated Legendre polynomial in a with unassociated order b and associated order c
kei'au
mekso operator: finite result set derived from/on set A with/due to operator/function B under ordering of application C
ku'au'a (exp!)
mekso (n+1)-ary operator: q-analog converter - the ath analog of b (quoted operator) applied to operands c, d, ...
mu'ai'au (exp!)
mathematical/logical/mekso ternary operator: μ (mu) operator: outputs the most extreme extended-natural number that satisfies relationship/predicate A, where extremeness is bounded by B and of a version determined by C; error output is -1
ni'e'oi
digit/number: Niven's smallest-exponent prime factorization constant c = zeta(3/2)/zeta(3) ≈ 2.1732543125195541382370898404…
pi'ei (exp!)
mathematical/mekso binary operator: vector or function inner product over a field; the inner product of A and B over field C
pu'e'ei (exp!)
mekso binary operator: generate span; outputs span(X1, X= spanX; set of all (finite) sums of terms of form c v, where v is an element of algebraic structure X1 (wherein scalar multiplication and summation is defined), and c is a scalar belonging to ring 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
te'au'u (exp!)
mekso ternary operator: Knuth up-arrow notation: a \uparrow \dots \uparrow b of order/with c-2 arrows ("\uparrow") initially, evaluated from right to left; the cth hyperoperator on a by b.
te'i'ai (exp!)
6-ary mekso/mathematical operator: Heaviside function/step/Theta function of a, of order b, in structure c, using distribution d, within approximated limit e, with value f_b at 0
vo'au'u (exp!)
quaternary mathematical operator: (left) convolution (a★b)(c) in structure d
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.
xa'ei'u
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 \cap X, where for any A \subseteq O, Ac = O \setminus A.
tcatrkrisantemu
t1 is made of/contains/is a quantity of tea brewed from chrysantemum flowers x2 (default: C. morifolium).
cy zei bai'ei zei bangu
x1 is the C++ language used by x2 to express/communicate x3 (si'o/du'u, not quote).
cy zei bangu
x1 is the C language used by x2 to express/communicate x3 (si'o/du'u, not quote).
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.

In notes:

bitygau
g1 convinces/persuades b1 that b2 is true.
brocesri'inunsla
n1 is Chanukkah/Hanukkah celebrated by s1 with activities s3
cunrafsi
r1 is an unpredictable/irregular affix for word/concept r2, with form/properties r3, in language r4.
faircu'u
c1 is/are a/the function/activities involving persons c2 distributing f1 among/to f2; c1 is distribution
fa'irgau
g1 reveals to f1 f2 (du'u) about subject/object f3
febgau
g1 (person/agent) boils x2=f1 at temperature x3=f2 and pressure x4=f3.
grutersro
t1 is a silo for grain/cereal t2=g1
jaursabji
s1 irrigates/waters s3
jaursabypatxu
p1 is a watering can used by s1 to water/irrigate s3 made of p3
jintyke'a
k1=j1 is a well in k2 containing fluid j2 at location j3.
kadnyfasybau
k1=f1=b1 is the Canadian French language used by b2 to express/communicate b3 (si'o/du'u, not quote).
kisybau
k1=b1 is the Pakistani Urdu language used by b2 to communicate b3 (si'o/du'u, not quote)
kulgu'a
x1=g1 works on x2=g2 with goal/purpose x3=g3 which is associated to school x4=c1 at x5=c2 teaching subject(s) x6=c3 to audience/community x7=c4 (of which x1 is a part) operated by x8=c5
madysku
c1=m2 moralizes expressing c2 (sedu'u/text/lu'e concept) to audience c3 via expressive medium c4 using/based on ethics/morals/moral standards/ethical standards m1
mexybau
m1=b1 is the Mexican Spanish language used by b2 to express/communicate b3 (si'o/du'u, not quote).
mi'asna
s1 is laughter emitted by s2=c1
mujyku'e
k1 is universal in domain m2 defined by rules m3
nincu'u
cu1=cn1 is a new business involving persons cu2
nincu'upre
p1 is an intrepreneur involved in business cu1=cn1
nunsezyfanta
n1 is self-restraint shown by f1=s2
pirlarfi'i
f1=p3 paints picture f2=p1 in style/art form l1 representing/showing p2=f4 on medium p4
plinyxabykoi
k1 is the equator of planet x2=p1 (default Earth) revolving around p2
plinyxadba
x1 is a hemisphere of planet x2 (default Earth) revolving around p2
rabybau
r1=b1 is the Arabic language used by b2 to express/communicate b3 (si'o/du'u, not quote).
sairfa'o
f1=s2 is the dessert of meal f2=s1
selylacka'e
l2=k1 is trustworthy for l1 to bring about/ensure/maintain l3 under conditions k3
sezmlugau
g1=se2 pretends to have property(ies) si2 to observer si3 under conditions si4
sezyfanta
f1=s2 exercises/show self-restraint
si'astu
st1 is a place of honor/[shrine/podium/wall area/trophy case] for person/thing/[event] st2=si2 venerated/honored by si1
skezu'e
z1 is an engineer in the branch of s2 based on methodology s3 with purpose/goal z3
snocanci
c1 fades from location c2
solminli
x1 is x2 (default 1) Astronomical Unit(s) (AU) by standard x3.
sosyzda
x1 is a hamlet/settlement with inhabitants x2
sralygu'e
s1=g1 is Australia
tabykrili
k1 is crystalline carbon (default diamond) in form/arrangement k3
tanminli
x1 is x2 (default 1) parsec(s) by standard x3.
tcabriju
b1 is the city/town hall of city/town t1
ticyve'u
v1 fraudulently sells v2 [goods/service/commodity] to buyer v3=t2 for amount/cost/expense v4
tolckape
c1 is safe for c2 under conditions c3
tolnu'a
s1 is threatened by s2 (event)
xalpixydu'e
p1 drinks too much alcohol of type p2 from p3 by standard d3; p1 is a drunk
xilvidru
v1=x1 is a rotavirus of species/breed/defining property v2 capable of infecting [at] v3.
xislivnunsla
n1 is Easter celebrated by s1 with activities s3
xisyjbedetri
d1 is Christmas Day at location d3 in calendar d4.
xumsle
s1 is a molecule of chemical x2.
zbafavycu'u
c1 is/are the function/activities involving persons c2 developing products f2=z2 made by z1; c1 is product development.
modju
x1 (li; number) is congruent to x2 (li; number; see description for canonical/traditional/contextless default usage) modulo x3 (li; number); \frac(x1 - x is an integer.
skuna
x1 (agent) expresses/says x2 (sedu'u/text/lu'e concept) for audience x3 via expressive medium x4.
takni
x1 is a binary relationship which is transitive in space/under conditions/on set x2.
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).
da'a'au (exp!)
mekso operatory: prime mark append
ka'o'ai
imaginary i (non-comma)
kau'o
generic algebra unit en
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
pi'ei'oi (exp!)
mathematical ternary operator: prime-generating function.
se'u'o
selbri conversion question
tai'u
(something which approximately has) the abstract shape of the symbol for the previous construct
vei'u (exp!)
binary mekso operator: mod(ulus)/remainder; X1 \% X2, \,\,\, X1 (mod(X2)).
zi'e'au
converts a following number into a sumti representing the MIDI note with that number.
zi'oi'oi
Delete subsequent sumti slots.
banckle
x1 is a dialect of language x2 which is weird or alien to x3 and which is used by x4.
bangrfarsi
x1 is the Farsi language used by x2 to express/communicate x3 (si'o/du'u, not quote).
efklipi
x1 is a binary relation which is right-Euclidean on space/set/under conditions x2.
efklizu
x1 is a binary relation which is left-Euclidean on space/set/under conditions x2.
estre
x1 is an ester derived from acid x2 and alcohol x3
ionti
x1 is an ion of radical/(atom of element)x2 with x3 charges
kulnrturko
x1 is Turkic/pertains to Turkic culture in aspect x2
spatnrafanu
x1 is a radish (plant) of variety x2
stagnrafanu
x1 is a radish (root/bulb) of variety x2
stanrcirsi
s1 is a/the stem of plant/species s2 (genus Cirsium).
tcuskuue
x1 (lu; quote) is said/expressed by x2, followed by expression x3 (lu; quote), via expressive medium x4, and then continuing on/proceeding/serially resuming to express/say x5 (lu; quote), and then x6 (lu; quote), and then x7 (lu; quote), ... (open-ended terbri structure of arbitrarily many sumti slots).