Zool. [f. SPORO- + SAC2.] A simple form of gonophore.
1859. Annals Nat. Hist., IV. 140. These medusiform sporosacs.
1861. J. R. Greene, Man. Anim. Kingd., Cœlent., 40. The simplest kind of gonophore consists of a well-defined protuberance from the body-wall, the ‘sporosac.’
1888. Rolleston & Jackson, Anim. Life, 762. A sporosac … lodged in an ampulla or cavity of the coenosteum.
