/ Dictionary / Index H hypothenuse: Meaning and Definition of Find definitions for: hy•poth•e•nuse Pronunciation: (hī-poth'u-ns", -nys"), [key] — n. hypotenuse. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypothenar hypothermal Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language