/ Dictionary / Index N noma: Meaning and Definition of Find definitions for: no•ma Pronunciation: (nō'mu), [key] — pl. -mas. a gangrenous ulceration of the mouth or genitalia, occurring mainly in debilitated children. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: noma (Thesaurus) nom. nomad Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language