Lightning or a flash of lightning; a sudden and brilliant light.
From Latin fulgur, meaning literally 'lightning' or 'brightness,' derived from fulgēre 'to shine.' In Latin, fulgur specifically referred to the lightning bolts of gods and was associated with sudden, violent illumination. This term entered medieval and Renaissance English, often appearing in theological and poetic contexts.
In ancient Rome, lightning was considered a direct message from Jupiter himself—fulgur was that divine weapon! When medieval scholars wrote about apocalyptic visions, they used fulgur to describe those terrifying moments when the heavens opened with divine light.
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