Breadcrumb Home > Dictionary > Index C chief petty officer: Meaning and Definition of Find definitions for: chief' pet'ty of"ficer Pronunciation: [key] — U.S. Navy and Coast Guard. U.S. Navy and Coast Guard. a noncommissioned rank above petty officer first class and below senior petty officer. Abbr.: CPO, C.P.O., c.p.o. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chief of state chieftain 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: pernicious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language