Definition

A bony growth that forms on the surface of a bone or tooth.

Example

The doctor explained that the exostosis on his knee was not harmful.

Conversation

Have you ever heard of exostosis?

No, I haven't. What is it?

It's actually a bony growth that can form on bones or teeth.

That sounds interesting! Is it something to worry about?

Synonyms & Antonyms

Root Explanation

Exostosis is formed from "exo-" (meaning outside) and "ostosis" (from Greek "osteon", meaning bone). The term refers to a bony growth that occurs on the outside of a bone.

Memory Tip

Think of 'outside' ('exo-') and 'bone' ('ostosis') to remember that exostosis refers to a growth on the outside of a bone.

Visually Confused Words