† noctilucann.BiologyObsoleterare = sense 4.Apparently only attested in dictionaries or glossaries.
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the world > animals > invertebrates > protozoa > class Flagellata or Mastigophora > subclass Dinoflagellida > [adjective] > of member of genus Noctiluca
noctilucan1885
1885 Cassell's Encycl. Dict. V. iNoctilucan, any individual of the genus Noctiluca.