/ Dictionary / Index O ob-gyn: Meaning and Definition of Find definitions for: ob-gyn Pronunciation: (ō'bē'jē'wī"en'), [key] obstetrical-gynecological. obstetrician-gynecologist. obstetrics and gynecology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. obfuscate obi Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language