fulgetrum.
lightning, heat lightning
Meaning & usage
lightning, heat lightning
Where this word comes from
Etymology tree Proto-Indo-European *bʰel- Proto-Indo-European *-éh₁ti Proto-Indo-European *-yeti Proto-Indo-European *-éh₁yeti Proto-Indo-European *bʰl̥géh₁yeti Proto-Italic *folgēō Latin fulgeō Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Italic *-trom Latin -trum Latin fulgetrum From fulgeō (“to flash, to glitter, to lighten”) + -trum.
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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.