/ Dictionary / Index C conditional operation: Meaning and Definition of Find definitions for: condi'tional opera'tion Pronunciation: [key] — Computers. Computers. a step in a computer program that determines which of two or more instructions or instruction sequences to execute next, depending on whether or not one or more specified conditions have been met. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. conditional convergence conditional probability Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language