Archi-
Pronunciation : Ar"chi-.
Etymology : [L., archi-, Gr. arce-, erce-, OHG. erzi-.]
Definition : Defn: A prefix signifying chief, arch; as, architect, archiepiscopal. In Biol. and Anat. it usually means primitive, original, ancestral; as, archipterygium, the primitive fin or wing.
Source : Webster's Unabridged Dictionary, 1913