Dictionary.net

• Spacious sub-cortical crypt in the tissue of Sponges from which the incurrent canals start.

1920 - A dictionary of scientific terms.
By Henderson, I. F.; Henderson, W. D.

• [Greek] Spacious sub-cortical crypt in sponge tissue, from which arise incurrent canals.

1920 - A dictionary of scientific terms (6th edition)
By J.H. Kenneth