Osteoporosis

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Osteoporosis \Os`te*o*po*ro"sis\, n. [NL.; osteo- + Gr. po`ros
     pore.] (Med. & Physiol.)
     An absorption of bone so that the bone tissue becomes
     unusually porous. It occurs especially in elderly men and
     postmenopausal women, and predisposes the elderly to
     fractures of the bones.


     [Webster 1913 Suppl. +PJC]

From WordNet (r) 2.0 [wn]:

  osteoporosis
       n : abnormal loss of bony tissue resulting in fragile porous
           bones attributable to a lack of calcium; most common in
           postmenopausal women