dehiscence (n.)youdaoicibaDictYouDict[dehiscence 词源字典]
1828, from Modern Latin dehiscentia, from dehiscentem (nominative dehiscens), present participle of dehiscere "to gape, open, split down" (of the earth, etc.), from de- (see de-) + hiscere, inchoative of hiare "to yawn" (see yawn (v.)).[dehiscence etymology, dehiscence origin, 英语词源]