/ Dictionary / Index A ABM: Meaning and Definition of Find definitions for: ABM Pronunciation: [key] antiballistic missile. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: abm (Thesaurus) ably abmho Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language