'Hypotenuse' definitions:

Definition of 'hypotenuse'

(from WordNet)
noun
The side of a right triangle opposite the right angle

Definition of 'Hypotenuse'

From: GCIDE
  • Hypotenuse \Hy*pot"e*nuse\, Hypothenuse \Hy*poth"e*nuse\, n. [L. hypotenusa, Gr. ?, prob., subtending (sc. ?), fr. ? to stretch under, subtend; ? under + ? to stretch. See Subtend.] (Geom.) The side of a right-angled triangle that is opposite to the right angle. [1913 Webster]