Iuno

There are two hypotheses:

• From Proto-Indo-European *dyúh₃onh₂-, *dyúh₃nh₂- (“having heavenly authority”), from *dyew- (“sky, heaven”) + *-Hō (“burden, authority”), rendering Iuvō, *Iūnis, normalized to Iūnō, Iūnōnis. See Ancient Greek Διώνη (Diṓnē, “Dione”);
• From Proto-Indo-European *h₂yúh₃onh₂-, *h₂yúh₃nh₂- (“the young goddess”), from *h₂eyu- (“long time, lifetime”) + *-Hō (“burden, authority”) also rendering *Iuvō, *Iūnis, normalized to Iūnō, Iūnōnis. See Latin iuvenis (“young”).

• (Classical) IPA^(key): /ˈi̯uː.noː/, [ˈi̯uːnoː]
• (Ecclesiastical) IPA^(key): /ˈju.no/, [ˈjuːno]

• Audio (Classical)

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Iūnō f sg (genitive Iūnōnis); third declension

1. (Roman mythology) Juno (the Roman equivalent of the Greeks' Hera, queen of the gods)
2. (New Latin) Juno, 3 Juno (asteroid)

Third-declension noun, singular only.

• “Iuno”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• Clackson, James, Indo-European Word Formation: Proceedings from the International Conference, 2002

Iuno

1. Alternative form of Juno