Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

effectĭo, ōnis, f. [efficio] (only in the philos. lang. of Cicero).

  1. I. A doing, performing, effecting, practising: artis, Cic. Fin. 3, 7, 24: recta (a transl. of κατόρθωσις), id. ib. 3, 14, 45.
  2. * II. I. q. causa efficiens, the producing or efficient cause, Cic. Ac. 1, 2, 6.