ferri-

Prefix

 * 1)  ferric:
 * 2) Iron (the metal).
 * 3) Iron of oxidation number 3.
 * 1) Iron of oxidation number 3.

Etymology
(see 🇨🇬)

Prefix

 * 1) ferri-, ferric, iron(III) oxide- of compounds of iron in which it has a valence or oxidation number of 3