/ Dictionary / Index G gigabit: Meaning and Definition of Find definitions for: gig•a•bit Pronunciation: (gig'u-bit", jig'-), [key] — n. Computers. a measure of storage capacity and data transfer equal to 1 billion (10) bits. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gigabit (Thesaurus) giga- gigabyte Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language