/ Dictionary / Index N Napierian logarithm: Meaning and Definition of Find definitions for: Napier'ian log'arithm Pronunciation: [key] — Math. Math. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Napierian Napier's bones 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