from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A type of moth, the io moth.
- interj. An exclamation of joy or triumph.
from The Century Dictionary and Cyclopedia
- A Latin interjection, or exclamation of joy or triumph: sometimes used as a noun in English.
- n. In mythology, a daughter of Inachus, metamorphosed into a heifer and caused to be tormented by a terrible gadfly by Hera, in jealous revenge for the favors of Zeus. See Argus, 1.
- n. The innermost of the four satellites of Jupiter.
- n. In entomology: A genus of vanessoid butterflies.
- n. [lowercase] The peacock butterfly, Vanessa io: used both as the technical specific name and as an English word.
- n. [lowercase] A showy and beautiful moth of North America, Hyperchiria io, or Saturnia io, of yellow coloration, with prominent pink and bluish eyes on the hinder wings.
- n. An abbreviation of Iowa.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the closest of Jupiter's moons; has active volcanoes
- n. (Greek mythology) a maiden seduced by Zeus; when Hera was about to discover them together Zeus turned her into a white heifer
Modern Latin, from Ancient Greek ἰώ (iṓ, "Io"). (Wiktionary)
From Latin; compare Ancient Greek ἰώ (iō, "oh!"). (Wiktionary)