NOCTILUCA Meaning of NOCTILUCA in English [ ˌnɒktɪ'lu:kə ]■ noun ( plural ~e -ki: ) a roughly spherical phosphorescent marine dinoflagellate. [Genus Noctiluca .]Originmod. L., from L., lit. 'night light, lantern'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004