Breadcrumb Home > Dictionary > Index O Cite octadecanoic acid: Meaning and Definition of Find definitions for: oc'ta•dec•a•no'ic ac'id Pronunciation: (ok'tu-dek"u-n?'ik, ok"-), [key] ? Chem. Chem. See Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. octad octagon TrendingHere are the facts and trivia that people are buzzing about. February 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress Noble Titles and Ranks in a Monarchy Keeping Your Brain Active in a COVID-19 World The Manchu Related Content Daily Word Quiz: puerile Analogy of the Day: Today?s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language