ˈkōrəsə̇s noun
( plural chori·ses -əˌsēz)
Etymology: Late Greek chōrisis separation, from Greek chōrizein to separate, from chōris apart — more at chori-
: the separation of a leaf or floral organ into two or more parts by division during development — called also collateral chorisis when the parts are side by side and parallel chorisis or median chorisis when they are one in front of another