Breadcrumb Home > Dictionary > Index E efficient cause: Meaning and Definition of Find definitions for: effi'cient cause' Pronunciation: [key] — Aristotelianism. Aristotelianism. See under(def. 8b). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. efficient Effie TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: bowdlerize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language