os‧te‧o‧po‧ro‧sis /ˌɒstiəʊpəˈrəʊsəs, ˌɒstiəʊpəˈrəʊsɪs $ ˌɑːstioʊpəˈroʊ-/
noun [uncountable][
Date: 1800-1900;
Origin: osteo- + Modern Latin porosis (from Latin porus; ⇒ pore1)]
a medical condition in which your bones become weak and break easily:
the risk of developing osteoporosis [TahlilGaran] Dictionary of Contemporary English ▲