Dictionary.net

A form of degeneration of bone in which it is converted into a dense hard substance like ivory.

Hardening of bone, resembling ivory.

A disease in the bones, which consists in an abormal deposition of osseous matter, chiefly in the joints.

In med., the excessive deposition of osseous matter in certain diseased states of bones.

Degeneration of bone into a hard and ivory-like mass.

The act or process of becoming hard and dense like ivory. A process met with sometimes in osteomyelitis, when it is known as eburnatio ossis, and also in syphilis of the bone. [Lat.]