Borrowed from Late Latin Diāna, short form of Latin Dīāna, derived by syncope from Old Latin Dīvāna, equivalent to dīvus + --āna; roughly akin to Proto-Italic *deiwā + Proto-Indo-European *-nós. Originally an Old Italic divinity of light and the moon; later identified as the Roman counterpart to Greek goddess Artemis. Cognate of , similarly syncopated from older Ancient Greek Διϝωνη, whence via Latin Diōne is derived English Dione used in various ways across astronomy, chemistry, biology, and as a given name. From the same root Proto-Indo-European *dyúh₃onh₂- also potentially cognate to English June via Latin Iūnō.
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