/ Dictionary / Index A abundance: Meaning and Definition of Find definitions for: a•bun•dance Pronunciation: (u-bun'duns), [key] — n. an extremely plentiful or oversufficient quantity or supply: an abundance of grain. overflowing fullness: abundance of the heart. affluence; wealth: the enjoyment of abundance. the number of atoms of one isotope of an element divided by the total number of atoms in a mixture of the isotopes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: abundance (Thesaurus) Abuna abundant Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language