On grammatical class:

co
tanru inversion operator; "... of type ..."; allows modifier trailing sumti without sumti links.
co'ai'e
Non-committal/agnostic/unassertive/abstaining/neutral tanru inversion.
co'au'e
trivial selbri inversion: does not invert tanru (seltau first/left, tertau second/right).
co'o'e
elliptical/vague/unspecific/generic tanru inversion

In definition:

pavytabjoikijno
k1=t1 is a quantity of/contains/is made of carbon monoxide (CO).
ridjinme
x1 is a quantity of/contains/is made of cobalt (Co).
samjudri
j1 is an adress of / are co-ordinates of computer system / computerized thing j2=s1 in system j3; computerized thing has purpose s2.
tabypavykijno
x1 is a quantity of carbon monoxide (CO)
co'u'o
tanru inversion question: asks for a CO cmavo.
cmavrco
x1 is the selma'o "CO".

In notes:

bafcolkercrakre
x1=b1 are sideboards/sideburns/tufts of hair under temple of x2=kerf2=kerl2=c3.
dindi
x1 is a non-binary-gendered/hermaphrodite/intersexed (probably also can include: asexual, nongendered, indeterminately gendered) individual of species x2 evidencing non-binary-gender trait(s) x3 (ka); x1 is characterized by not following or fitting into some gender-binary.
dinti
x1 is a non-binary-gendered/hermaphrodite/intersexed (probably also can include: asexual, nongendered, indeterminately gendered) individual of species x2 evidencing non-binary-gender trait(s) x3 (ka); x1 is characterized by not following or fitting into some gender-binary.
nunmu
x1 is a non-binary-gendered humanoid person [not necessarily adult]
paznu
x1 is a non-binary-gendered offspring/child of mother/father/parents x2 [not necessarily biological]; x1 is filial (but not a son or daughter)
preri
x1 is a non-binary-gendered parent of x2 [not necessarily biological]
ke'oi
reverses modification order of contained tanru (does not affect lujvo).
ckajrdinti
x1 is a non-binary-gendered individual of species x2 evidencing non-binary-gender trait(s) x3 (ka); x1 is characterized by not following or fitting into some gender-binary.
cletckajiko
x1 is a mathematical set/structure/space/object (use appropriate gadri) such that its (set-/structure-/space-/object-theoretic) complement (in space x3) has property x2 (ka) in space x3
remrnunmu
x1 is a non-binary-gendered humanoid person [not necessarily adult]
tsekane
x1 (linear manifold, vector, etc.) is/lies secant to x2 (object, surface, curve, manifold, etc.) passing through or toward points/loci x3 (set of intersected points), by standard/definition/in system x4.
zo'anjo
x1 (linear manifold, vector, etc.) is/lies tangent to x2 (object, surface, curve, manifold, etc.) at point/locus x3, by standard/definition/in system x4.
re zei zgabube
x1 is a part of Lojban text representing rule 'selbri-2' according to the first edition of the book 'The Complete Lojban Language'.