hypotenuse
noun /haɪˈpɒtənjuːz/
/haɪˈpɑːtənuːs/
(geometry- enlarge imagethe side opposite the right angle of a right-angled triangle
(直角三角形的)斜边,弦 Topics Maths and measurementc2词源late 16th cent.: via Latin hypotenusa from Greek hupoteinousa (grammē) ‘subtending (line)’, from the verb hupoteinein (from hupo ‘under’ + teinein ‘stretch’).