An archaic or historical term, possibly a Latinized scientific name relating to thunder or a place/structure associated with thunder in ancient times.
Latin form of Greek 'bronte' (thunder), using the '-eum' masculine noun ending. This is characteristic of Neo-Latin coinages from the Renaissance and Enlightenment.
Scholars in the 1600s-1800s loved inventing Latinized versions of Greek words to sound scientifically important—bronteum is their way of making 'the thunder place' sound like legitimate scientific vocabulary.
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