/ Dictionary / Index T tanh: Meaning and Definition of Find definitions for: tanh Pronunciation: [key] hyperbolic tangent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tangy Tanis Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language