Dictionary.net

• In Sponges, an internal bud or group of cells destined to become a gemmule.

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

• [Greek] In Sponges, an internal bud or group of cells destined to become a gemmule (zool.).

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