Definition of hypotenuse in English:
 hypotenuse
noun hʌɪˈpɒtənjuːshʌɪˈpɒtənjuːzhaɪˈpɑtnˌ(j)us
The longest side of a right-angled triangle, opposite the right angle.
 Example sentencesExamples
-  In fact it is the length of the hypotenuse of a right angled triangle which had sides of length one.
 -  He sees the hypotenuse of a right triangle made by the deck, the mast and the front edge of the beam moving down to the deck.
 -  In case you have forgotten your high school geometry, the hypotenuse is the side opposite the right angle.
 -  The square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the legs.
 -  Can we have any other Pythagorean triangles with a Fibonacci number as the hypotenuse (the longest side)?
 
Origin
  
Late 16th century: via Latin hypotenusa from Greek hupoteinousa (grammē) 'subtending (line)', from the verb hupoteinein (from hupo 'under' + teinein 'stretch').
   Definition of hypotenuse in US English:
 hypotenuse
nounhīˈpätnˌ(y)o͞oshaɪˈpɑtnˌ(j)us
The longest side of a right triangle, opposite the right angle.
 Example sentencesExamples
-  The square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the legs.
 -  He sees the hypotenuse of a right triangle made by the deck, the mast and the front edge of the beam moving down to the deck.
 -  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.
 
Origin
  
Late 16th century: via Latin hypotenusa from Greek hupoteinousa (grammē) ‘subtending (line)’, from the verb hupoteinein (from hupo ‘under’ + teinein ‘stretch’).