/ Dictionary / Index C commanding officer: Meaning and Definition of Find definitions for: command'ing of'ficer Pronunciation: [key] a commander of any rank from second lieutenant to colonel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. commanding commandment Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language