/ Dictionary / Index N neper: Meaning and Definition of Find definitions for: ne•per Pronunciation: (nē'pur, nā'-), [key] — n. Physics. the unit used to express the ratio of two amplitudes as a natural logarithm: equal to 8.68 dB. Abbr.: Np Ne•per Pronunciation: (nā'pur), [key] — n. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nepenthes neph- Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language