"morbid absorption of bone, so that it becomes abnormally porous," 1846, from osteo- "bone" + Greek poros "passage; pore; voyage" (see pore (n.)) + -osis. Related: Osteoporotic.
ostentatious
osteo-
osteology
osteopath
osteopathy
osteoporosis
ostinato
ostler
Ostmark
ostomy
ostracean
