Breadcrumb Home > Dictionary Cite Meaning of isoabnormal Find definitions for: i•so•ab•nor•mal Pronunciation: (ī"sō-ab-nôr'mul), [key] — n. Meteorol. isabnormal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. iso isoagglutination Related Content Daily Word Quiz: philistine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language