[ex.os.to.sis] n, pl -to.ses [NL, fr. Gk exostosis, fr. ex out of + osteon bone--more at ex-, osseous] (1736): a spur or bony outgrowth from a bone or the root of a tooth
EXOSTOSIS
Meaning of EXOSTOSIS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012