Definition of "osteopetrosis" [osteopetrosis]

• A rare hereditary disorder characterized by hard, dense bones. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "Welling was diagnosed at a very young age with a rare genetic condition known as osteopetrosis in which bone matter can crush bone marrow cavities and can lead to especially dense bones."
• "Karas remembered hearing, "It was a little 1-year-old boy with this horrible disease called osteopetrosis, and the only cure was a bone marrow transplant, and would I be willing?""
• "But some people actually lay down too much calcium in bone, a condition called "osteopetrosis" from "petros" as in stony."