/ Dictionary / Index M mammoth: Meaning and Definition of Find definitions for: mam•moth Pronunciation: (mam'uth), [key] — n. any large, elephantlike mammal of the extinct genus Mammuthus, from the Pleistocene Epoch, having hairy skin and ridged molar teeth. —adj. immensely large; huge; enormous: a mammoth organization. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mammoth (Thesaurus) mammoplasty Mammoth Cave National Park Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language