释义 |
ex·os·tosis \ˌekˌsäˈstōsə̇s\ noun (plural exosto·ses \-ōˌsēz\) Etymology: New Latin, from Greek exostōsis, from ex out of, out + osteon bone + -ōsis -osis — more at ex-, osseous 1. : a spur or bony outgrowth from a bone or the root of a tooth 2. : the formation of knots upon the surface of wood in trees |