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Definition

noun, plural: osteoporoses

A disease of bone in which the bones become extremely porous and are subject to fracture.

Supplement

This condition is caused by low levels of bone mineral density (BMD), hence, there is an increased risk of fracture. It is commonly seen in elderly, especially women following menopause. Nevertheless, it may also develop in anyone in the presence of particular hormonal disorders.

Word origin: osteo refers to bone + Greek pór(os), passage + -osis.

Related forms: osteoporotic (adjective).
Related phrases: senile osteoporosis.

See also: osteopetrosis.