/ Dictionary / Index N nodule: Meaning and Definition of Find definitions for: nod•ule Pronunciation: (noj'l), [key] — n. a small node, knot, or knob. a small, rounded mass or lump. a tubercle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nodule (Thesaurus) nodular cast iron nodulous 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