noun: (zoology, obsolete) One of a tribe of plectognath fishes (Sclerodermi) having the skin covered with hard scales, or plates, such as the cowfish and trunkfish.
noun: (zoology, obsolete) One of the Sclerodermata; a madrepore.
noun: A hardened or bony integument of various animals.
noun: (pathology) Alternative form of scleroderma. [(medicine) A chronic systemic autoimmune disease characterized by hardening the skin or other organs through excessive deposits of collagen.]
