brittle bone disease

/B R IH1 T AH0 L B OW0 N D IH0 Z IY0 Z/
noun
  1. 1

    A hereditary disease characterized by brittle bones that easily fracture.

Source: https://en.wiktionary.org/wiki/brittle%20bone%20disease, https://en.wiktionary.org/wiki/osteogenesis%20imperfecta