/ Dictionary / Index A aplastic anemia: Meaning and Definition of Find definitions for: aplas'tic ane'mia Pronunciation: [key] — Pathol. Pathol. severe anemia due to destruction or depressed functioning of the bone marrow, usually resulting from bone cancer, radiation, or the toxic effects of certain drugs or chemicals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aplasia aplenty Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language