(n)a disturbance in which bone that is undergoing lysis is replaced by an abnormal proliferation of fibrous tissue resulting in bone lesions or skin lesions
a. [ Cf. F. fibreux. ] Containing, or consisting of, fibers; as, the fibrous coat of the cocoanut; the fibrous roots of grasses. -- Fi"brous*ness, n. [1913 Webster]
[とうがたつ, tougatatsu](exp, v5t) to become hard and fibrous; to go to seed; to have passed one's prime; to have lost the first bloom of one's youth[Add to Longdo]