hypotenuse

1. hypo- + ten- + -us(拉丁语后缀) + -e(由拉丁语或者希腊语的阴性后缀变体、变化而来：-a => -e).
2. Latin hypotenusa => hypotenuse. 因此该词是由阴性词变化而来。
3. 字面含义："stretching under" (the right angle).
4. Formerly often erroneously hypothenuse.

hypotenuse 直角三角形的斜边，弦

hypo-,在下，-ten,展开，词源同tenure,extend.即在下面展开的，用于数学名词弦，即最长的边。

hypotenuse

hypotenuse: [16] The hypotenuse is etymologically a line that is ‘stretched under’ the right angle of a triangle. The word comes via Latin hypotēnūsa from Greek hupoteínousa, a derivative of hupoteínein. This was a compound verb formed from the prefix hupo- ‘under’ and teínein ‘stretch’ (a relative of English tend, tense, etc).
=> tend, tense

hypotenuse (n.)

1570s, from Late Latin hypotenusa, from Greek hypoteinousa "stretching under" (the right angle), fem. present participle of hypoteinein, from hypo- "under" (see sub-) + teinein "to stretch" (see tenet). Formerly often erroneously hypothenuse.

1. The hypotenuse is the longest side of a right triangle.

直角三角形的斜边是直角三角形中最长的边.

2. Compute the lengths of the hypotenuse and the other small side.

计算斜边和其它小的边的长度. )

3. Either side of a right triangle that is hypotenuse.

直角边直角三角形除斜边之外的两条边的任意一条.

4. The hypotenuse of a right triangle is always the longest side.

直角三角形的斜边总是最长的.

5. Either side of a right triangle that is not the hypotenuse.

'直角'.''边''.'直角'.''''.'三角形'. ''除斜边之外的两条边的任意一条.