ma'u PA3 cmavo

digit/number: plus sign; positive number; default any positive.

On affix form:

makcu
x1 is mature/ripe/fully-grown/adult in development-quality x2 (ka).

In notes:

dikca
x1 is electricity [electric charge or current] in/on x2 of polarity/quantity x3 (def. negative).
ni'u zei ionti
x1 is an anion of radical/(atom of element)x2 with x3 charges.
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