[ os-tee-oh-muh-ley-shuh, -shee-uh, -see-uh ]
/ ˌɒs ti oʊ məˈleɪ ʃə, -ʃi ə, -si ə /

noun Pathology.

a condition characterized by softening of the bones with resultant pain, weakness, and bone fragility, caused by inadequate deposition of calcium or vitamin D.

Origin of osteomalacia

From New Latin, dating back to 1815–25; see origin at osteo-, malacia

Related forms

os·te·o·ma·la·cial, os·te·o·ma·lac·ic [os-tee-oh-muh-las-ik] /ˌɒs ti oʊ məˈlæs ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for osteomalacia

British Dictionary definitions for osteomalacia


/ (ˌɒstɪəʊməˈleɪʃɪə) /


a disease in adults characterized by softening of the bones, resulting from a deficiency of vitamin D and of calcium and phosphorus

Derived Forms

osteomalacial or osteomalacic (ˌɒstɪəʊməˈlæsɪk), adjective

Word Origin for osteomalacia

C19: from New Latin, from osteo- + Greek malakia softness
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for osteomalacia


[ ŏs′tē-ō-mə-lāshə ]


A bone disease characterized by bone demineralization due to deficiency or impaired metabolism of vitamin D or phosphates. adult rickets late rickets
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.