/ Dictionary / Index B bases: Meaning and Definition of Find definitions for: ba•ses Pronunciation: (bā'sēz), [key] — n. pl. of bas•es Pronunciation: (bā'siz), [key] — n. pl. of. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bases (Thesaurus) base runner base station Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language