EXOSTOSIS - Definition

Pronunciation:		`eksâ'stowsis
WordNet Dictionary

	Definition:	[n] a benign outgrowth from a bone (usually covered with cartilage)

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	See Also:	growth

Webster's 1913 Dictionary

	Definition:	\Ex`os*to"sis\, n. [NL., fr. Gr. ?; ? out + ? bone: cf. F ? exostose.] 1. (Med.) Any protuberance of a bone which is not natural; an excrescence or morbid enlargement of a bone. --Coxe. 2. (Bot.) A knot formed upon or in the wood of trees by disease.

Biology Dictionary

	Definition:	A noncancerous growth on the surface of a bone, usually with a cartilage cap, that is due to long-term irritation as a result of osteoarthritis, infections, or trauma.