An alternative spelling of bimillenium; a period of two thousand years or its anniversary celebration.
Variant spelling of bimillenium with doubled 'l', from Latin bi- (two) + millennium. Both spellings are used in English, though bimillenium is more standard.
English loves spelling variations—bimillennium shows how the same word can be written different ways depending on whether people follow stricter Latin rules or anglicize the spelling.
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