Definition of hypotenuse in English:

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Pronunciation: /hʌɪˈpɒtənjuːz/
Pronunciation: /hʌɪˈpɒtənjuːs/


The longest side of a right-angled triangle, opposite the right angle.
Example sentences
  • Can we have any other Pythagorean triangles with a Fibonacci number as the hypotenuse (the longest side)?
  • In fact it is the length of the hypotenuse of a right angled triangle which had sides of length one.
  • In case you have forgotten your high school geometry, the hypotenuse is the side opposite the right angle.


Late 16th century: via Latin hypotenusa from Greek hupoteinousa (grammē) 'subtending (line)', from the verb hupoteinein (from hupo 'under' + teinein 'stretch').

For editors and proofreaders

Line breaks: hypot|en¦use

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