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Definition of: hypotenuse
(hī·pot′ə·ns, -nys, hi-) noun Geom.
The side of a right–angled triangle opposite the right angle. Also hy·poth′e·nuse (-poth′-). [<L hypotenusa <Gk. hypoteinousa (grammē) a subtending (line) <hypo- under + teinein stretch]
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