Zool. [f. Gr. κτενο- see above, here taken as short for ctenophora + κύστις bladder, CYST.] The vesicle, containing clear fluid and otoliths, which constitutes the organ of sense (probably of hearing) in the Ctenophora.
1861. J. R. Greene, Man. Anim. Kingd., Cœlent., 145. The ‘apical canals’ … run directly downwards and outwards on either side of the ctenocyst.
1882. in Syd. Soc. Lex.
