On grammatical class:

cu'o
convert number to probability selbri; event x1 has probability (n) of occurring under cond. x2.
mei
convert number to cardinality selbri; x1 is the mass formed from set x2 whose n member(s) are x3.
moi
convert number to ordinal selbri; x1 is (n)th member of set x2 ordered by rule x3.
si'e
convert number to portion selbri; x1 is an (n)th portion of mass/totality x2; (cf. gunma).
va'e
convert number to scalar selbri; x1 is at (n)th position on scale x2.
cei'a
x1 is the year / era of years indicated by PA (digit string) in calendar system x2
moi'o
x1 is the PA-th date/time of unit x2 (si'o) counting from x3 (default: now) by calendar x4
bimei
quantifier selbri: convert 8 to cardinal selbri; x1 is a set with the octet of members x2.
bimoi
quantified selbri: convert 8 to ordinal selbri; x1 is eighth among x2 ordered by rule x3.
cimei
quantifier selbri: convert 3 to cardinal selbri; x1 is a set with the trio of members x2.
cimoi
quantified selbri: convert 3 to ordinal selbri; x1 is third among x2 ordered by rule x3.
da'amei
quantifier selbri: convert all but one to cardinal selbri; x1 is a set with all but one members x2.
da'amoi
quantified selbri: converts all-but-(1) to ordinal selbri; x1 is penultimate among x2 by rule x3.
da'aremoi
quantified selbri: converts all-but-2 to ordinal selbri; x1 is antepenult. among x2 by rule x3.
du'emei
quantifier selbri: convert too many to cardinal selbri; x1 is a set with too many members x2.
mumei
quantifier selbri: convert 5 to cardinal selbri; x1 is a set with the quintet of members x2.
mumoi
quantified selbri: convert 5 to ordinal selbri; x1 is fifth among x2 ordered by rule x3.
nomei
x1 is a 0-some / empty mass / 0-tuple, with members x2 (must be the empty set).
pamei
quantified selbri: convert 1 to cardinal selbri; x1 is a set with single/sole/only member x2.
pamoi
quantified selbri: convert 1 to ordinal selbri; x1 is first among x2 ordered by rule x3.
panomei
quantifier selbri: convert 10 to cardinal selbri; x1 is a set with the decade of members x2.
panomoi
quantified selbri: convert 10 to ordinal selbri; x1 is tenth among x2 ordered by rule x3.
panonomei
quantifier selbri: convert 100 to cardinal selbri; x1 is a set with the century of members x2.
paremei
quantified selbri: convert 12 to cardinal selbri; x1 is a set with a dozen members x2.
pimucu'o
quantified selbri: convert .5 to probability selbri; event x1 has a 50/50 chance under cond. x2.
piresi'e
quantified selbri: convert .2 = 1/5 to portion selbri; x1 is 1/5 of mass/totality x2.
pirosi'e
quantified selbri: converts all-of to portion selbri; x1 is the whole portion of mass x2.
raumei
quantified selbri: converts enough to cardinal; x1 is a set with members x2, enough by std. x3.
raumoi
quantified selbri: converts enough to ordinal; x1 is enoughth among x2, order rule x3.
remei
quantified selbri: convert 2 to cardinal selbri; x1 is a set with the pair of members x2.
remoi
quantified selbri: convert 2 to ordinal selbri; x1 is second among x2 ordered by rule x3.
renomei
quantifier selbri: convert 20 to cardinal selbri; x1 is a set with the score of members x2.
romoi
quantified selbri: is final among; convert all to ordinal selbri; x1 is last among x2, rule x3.
so'imei
quantified selbri: convert many to cardinal; x1 is a set with many members x2 of total set x3.
somoi
quantified selbri: convert 9 to ordinal selbri; x1 is ninth among x2 ordered by rule x3.
su'oremei
quantified selbri: convert at least 2 to cardinal selbri; x1 is a set with plural membership x2.
su'oremoi
quantified selbri: convert at least 2 to ordinal selbri; x1 is at-least-2nd among x2 by rule x3.
vomoi
quantified selbri: convert 4 to ordinal selbri; x1 is fourth among x2 ordered by rule x3.
xamoi
quantified selbri: convert 6 to ordinal selbri; x1 is sixth among x2 ordered by rule x3.
zemoi
quantified selbri: convert 7 to ordinal selbri; x1 is seventh among x2 ordered by rule x3.

In definition:

momrai
x1=traji1=moi1 is the x2=moi(-1)th (li) most extreme member of set/range x5=traji4=moi2 (set; possibly ordered) in property/ordered according to measure of property x3=traji2 \sim moi (ka) measuring from the x4 = traji3-est/utmost (ka; default: ka zmadu) member, which/who has a similar ordinality count of x6 (li) in the same set by the same ordering.
banmu'ove
x1 is the language with ISO 639-3 code “mow” (Moi (Congo)).
banmuxunu
x1 is the language with ISO 639-3 code “mxn” (Moi (Indonesia)).
cmavrmoi
x1 is the selma'o "MOI".

In notes:

bivmoija'a
j1 has the rank of Lieutenant General/Vice Admiral/Air Marshal (equivalent of NATO OF-8) in military unit /organization j2.
cibmoija'a
j1 has the rank of Major/Lieutenant Commander/Squadron Leader (equivalent of NATO OF-3) in military unit /organization j2.
lerpavmoivla
l1 (quoted letteral) is the first letter of the word v1.
leryrolmoivla
l1 (quoted letteral) is the last letter of the word v1.
meirmoi
x1=moi1 is the x2-th element out of x3 elements from set x4=moi2=mei2.
momvelru'e
x1 is the x2-th stage in process x3.
mumymoija'a
j1 has the rank of Colonel/Captain/Group Captain (equivalent of NATO OF-5) in military unit /organization j2.
pavbudjo
b1 is the first Buddha, Siddhartha Gautama.
pavmoidei
x1 is x2=d2 (default: 1) first days of a set of days (week, month, year) x3=m2 ordered by rule x4=m3 and being a day by standard x5=d3
pavmoija'a
j1 has the rank of Lieutenant/1st Lieutenant (equivalent of NATO OF-1) in military unit /organization j2.
pavnonmoija'a
j1 has the rank of Field Marshall/General of the Army//Fleet Admiral/Marshall of the Air Force (equivalent of NATO OF-10) in military unit j2.
poiklo
x1 (sequence/string) has an occurrence at position/offset x2 (number) in sequence/string x3
porfa'o
x1 is a subsequence of x2 located at the end of x2 and x3 elements long
pormoi
x1 is in the x2-th slot of sequence x3
relmoija'a
j1 has the rank of Captain/Lieutenant/Flight Lieutenant (equivalent of NATO OF-2) in military unit /organization j2.
sozmoija'a
j1 has the rank of General/Admiral/Air Chief Marshal (equivalent of NATO OF-9) in military unit /organization j2.
vonmoija'a
j1 has the rank of Lieutenant Colonel/Commander/Wing Commander (equivalent of NATO OF-4) in military unit /organization j2.
xavmoija'a
j1 has the rank of Brigadier General/Brigadier/Rear Admiral/Commodore (equivalent of NATO OF-6) in military unit /organization j2.
zelmoija'a
j1 has the rank of Major General/Rear Admiral/Air Vice-Marshal (equivalent of NATO OF-7) in military unit /organization j2.
ziljmina
x1 is additional/extra to x2, with result x3
mei'u
converts sumti into selbri: x1 is [that sumti]'s, among x2, by relationship x3 (binary ka).
si'ei
numeric suffix: indicates that the number refers to portionality instead of cardinality
xau'e
symbol string to number/variable
xau'o
text to number/variable
ze'oi
converts following word to selbri-unit: "x1 is related to the meaning of this word in aspect x2"
etmoi
x1 is the value (sumti-object) associated with x2 (label or description), from compound object x3, in interpretation rules/system x4
tcekitaujei
x1 is the 'ce ki tau jei' dialect of Lojban, used by x2 to communicate x3 (si'o/du'u)
re zei taulka
x1 is a part of Lojban text representing rule 'tanru-unit-2' according to the first edition of the book 'The Complete Lojban Language'.