flexure (n.)youdaoicibaDictYouDict[flexure 词源字典]
1590s, "action of flexing or bending," from Latin flextura, from flectere "to bend" (see flexible). From 1620s as "flexed or bent condition; direction in which something is bent." Picked up in mathematics (1670s), geology (1833).[flexure etymology, flexure origin, 英语词源]