seafire.
Light which sometimes occurs (caused by the bioluminescence or biophosphorescence of certain organisms) and is visible in seawater on dark nights, typically a pale blue or green colour.
Meaning & usage
Light which sometimes occurs (caused by the bioluminescence or biophosphorescence of certain organisms) and is visible in seawater on dark nights, typically a pale blue or green colour.
Where this word comes from
Etymology tree English sea Proto-Indo-European *péh₂wr̥ Proto-Germanic *fōr Proto-West Germanic *fuir Old English fȳr Middle English fyr English fire English seafire From sea + fire. Compare Shetland mareel from Old Norse marr (“sea”) + eldr (“fire”), and marfire.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.