io: Meaning and Definition of


Pronunciation: (ē'ō), [key]
— pl. i•os.
  1. a small hawk, Buteo solitarius, having two plumage phases and occurring only on the island of Hawaii, where it is a rare species and the only living indigenous bird of prey. Also called


Pronunciation: (ī'ō, ē'ō), [key]
— n.
  1. a woman who, being loved by Zeus, was transformed into a white heifer and was, at the wish of Hera, first guarded by Argus and later pursued through the world by a gadfly until she reached Egypt, where she resumed her true shape: identified by the Egyptians with Isis.
  2. a large volcanically active moon of the planet Jupiter.


Pronunciation: (ī'ō, ē'ō), [key]
— pl. I•os.
  1. See


Pronunciation: [key]
— Symbol, Chem.
  1. ionium.


Pronunciation: [key]
  1. Iowa.


Pronunciation: [key]
  1. inboard-outboard.
  2. input/output.


Pronunciation: [key]
  1. indirect object.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
  • io (Thesaurus)