Webster's Revised Unabridged Dictionary · 1913

Scleroderm

Scleroderm (? o?; 277) , noun

[Greek sklhro`s hard + de`rma skin: compare French scléroderme.]

(a)
(Zoology) One of a tribe of plectognath fishes (Sclerodermi) having the skin covered with hard scales, or plates, as the cowfish and the trunkfish.
(b)
(Zoology) One of the Sclerodermata.
(c)
(Zoology) Hardened, or bony, integument of various animals.