Medical Definition of sclerosis
plural scle·ro·ses \-ˌsēz\play
1: a pathological condition in which a tissue has become hard and which is produced by overgrowth of fibrous tissue and other changes (as in arteriosclerosis) or by increase in interstitial tissue and other changes (as in multiple sclerosis)—called also hardening
Seen and Heard
What made you want to look up sclerosis? Please tell us where you read or heard it (including the quote, if possible).