emperor

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em·per·or / ˈemp(ə)rər/ • n. 1. a sovereign ruler of great power and rank, esp. one ruling an empire. 2. (also emperor butterfly) an orange and brown North American butterfly (genus Asterocampa, family Nymphalidae) with a swift dodging flight.

emperor

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emperor XIII. ME. emperere, emperour — respectively OF. emperere, nom. and emperour, -ëor, obl. (mod. empereur), semi-pop. — L. imperātor, imperātōrem, f. imperāre command, f. IM-1 + parāre PREPARE, contrive; see -OR1.

emperor

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emperor See LETHRINIDAE.