/ Dictionary / Index N nanometer: Meaning and Definition of Find definitions for: nan•o•me•ter Pronunciation: (nan'u-mē"tur, nā'nu-), [key] — n. one billionth of a meter. Abbr.: nm&hasp;&hasp; Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nanometer (Thesaurus) nanoid nanomole Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language