Chorisis
Pronunciation : Cho"ri*sis
Part of Speech : n.
Etymology : [NL., fr. Gr. (Bot.)
Definition : Defn: The separation of a leaf or floral organ into two more parts.
Note: In collateral chorisis the parts are side by side. -- In parallel or median chorisis they are one in front of another.
Source : Webster's Unabridged Dictionary, 1913