/ Dictionary / Index G giantess: Meaning and Definition of Find definitions for: gi•ant•ess Pronunciation: (jī'un-tis), [key] — n. an imaginary female being of human form but superhuman size, strength, etc. any very large woman. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: giantess (Thesaurus) giant crab giant fennel Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language