The Collaborative International Dictionary
keratode
Keratose \Ker"a*tose`\, n. [Gr. ke`ras, -atos, horn.] (Physiol. Chem.) A tough, horny animal substance entering into the composition of the skeleton of sponges, and other invertebrates; -- called also keratode.
Wiktionary
keratode
n. keratose