any one of various bioluminescent dinoflagellates regarding the genus Noctiluca that after grouped in large numbers make the sea phosphorescent.
what shines through the night; -- a fanciful name for phosphorus.
A genus of marine flagellate Infusoria, remarkable for abnormally large size and complex structure, as well as for their particular phosphorescence. The brilliant diffuse phosphorescence associated with the ocean is usually due to myriads of Noctilucæ.
A genus of free-swimming phosphorescent pelagicinfusorialanimalcules, typical of the family Noctilucidæ.