E / effectĭo
noun

effectĭo

gen. effectōnis · gender feminine · decl. 3rd
efficio (only in the philos. lang. of Cicero).
A doing; performing; effecting
A doing, performing, effecting, practising: artis, Cic. Fin. 3, 7, 24: recta (a transl. of κατόρθωσις), id. ib. 3, 14, 45.—*
the producing; efficient cause
I. q. causa efficiens, the producing or efficient cause, Cic. Ac. 1, 2, 6.