Main Entry: os·te·o·ma·la·cia

Pronunciation: \ˌäs-tē-ō-mə-ˈlā-sh(ē-)ə\

Function: noun

Etymology: New Latin, from oste- + Greek malakia softness, from malakos soft — more at mollify

Date: circa 1834

: a disease of adults that is characterized by softening of the bones and is analogous to rickets in the young