ma'u zei ionti zei-lujvo

x1 is an cation of radical/(atom of element)x2 with x3 charges.

Cf. ionti, ni'u zei ionti, lektoni, xumsle.

On affix form:

makcu
x1 is mature/ripe/fully-grown/adult in development-quality x2 (ka).
zekri
x1 (event/state) is a punishable crime/[taboo/sin] to people/culture/judges/jury x2.

In definition:

cmapagjvo
x1 (text) is a lujvo with meaning x2 and arguments x3, and which is constructed from tanru/veljvo x4 such that each element of the veljvo is ultimately only a cmavo (including "{zei}", "{ke}"/"{ke'e}", "{bo}", etc.), gismu, or rafsi of such cmavo or gismu.
zejvo
x1 (text) is a Lojban compound predicate using the particle “zei”; with meaning x2, arguments x3, built from metaphor (tanru) x4.
luvrzei
x1 (text) is a Lojban compound predicate using the particle “zei”; with meaning x2, arguments x3, built from metaphor (tanru) x4.
zeiljvo
x1 (text) is a Lojban compound predicate using the particle “zei”; with meaning x2, arguments x3, built from metaphor (tanru) x4.
zo si si zei fa'o
x1 is a nonsense zei-lujvo using parts x2, silly by standard x3.

In notes:

zmana'u
z1=n1 is a positive number relative to origin z2.
tcaxe
x1 (object) has charge x2 (number) in units x3 for interaction/of type x4 and in/by/using convention x5
no'e'u (exp!)
digit/number: liminal zero; neither positive nor negative
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)
si'i'ai (exp!)
digit/number: a finite/bounded number, finitely many.
te'i (exp!)
at a point on time axis
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)
ionti
x1 is an ion of radical/(atom of element)x2 with x3 charges
trendelenburge
x1 (humanoid body) is in (reverse) Trendelenburg position with the feet higher than the head by x2 (angle measurement, measured relative to the horizontal; units must be specified).
zenbaje
x1 (experiencer/function) increases/gains/is incremented/augmented in property/quantity x2 such that it achieves/had achieved having that property at 'time' x3 (abstraction, number) according to standard x4
zmaumce
x1 (li) is a bound on set x2 (set) in direction x3 (li) in ordered structure x4; x1 bounds x2 from the x3 side in x4; x2 is bounded from the x3 side by x1.
ni'u zei ionti
x1 is an anion of radical/(atom of element)x2 with x3 charges.
ni'u zei namcu
x1 is a negative number (less than zero (0)), understood as a member of an ordered set with additive identity, such as the typical structure on the set of all real numbers.