Definition of noctiluca
1 plural -s obsolete : phosphor 2
2 capitalized [New Latin, from Latin, moon] : a genus of marine plantlike flagellates (order Dinoflagellata) that are unusually large, complex in structure, and bioluminescent and that when present in numbers are responsible for much of the phosphorescence of the sea
3 plural noctilucas \-kəz\ or noctilucae \-üˌsē\ : any organism of the genus Noctiluca
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Origin and Etymology of noctiluca
New Latin, from Latin, moon, lantern, from nocti- noct- + -luca, from lucēre to shine (noun)
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