from the GNU version of the Collaborative International Dictionary of English.
- noun (Physiol. Chem.) A tough, horny animal substance entering into the composition of the skeleton of sponges, and other invertebrates; -- called also
- adjective (Zoöl.) Containing hornlike fibers or fibers of keratose; belonging to the Keratosa.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective medicine Relating to or marked by
Sorry, no etymologies found.
Oscar Schmidt has already pointed this out in the siliceous sponges and keratose sponges; and I, in my monograph, in three volumes, on the Calcareous