ni'u PA3 cmavo

digit/number: minus sign; negative number); default any negative.

On affix form:

ninmu
x1 is a woman/women; x1 is a female humanoid person [not necessarily adult].

In notes:

dikca
x1 is electricity [electric charge or current] in/on x2 of polarity/quantity x3 (def. negative).
ma'u zei ionti
x1 is an cation of radical/(atom of element)x2 with x3 charges.
mecna'u
m1=n1 is a negative number relative to origo m2.
zmana'u
z1=n1 is a positive number relative to origo z2.
ionti
x1 is an ion of radical/(atom of element)x2 with x3 charges