io

[ ee-oh ]
/ ˈi oʊ /

noun, plural i·os.

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.

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Also called Hawaiian hawk.

Origin of io

From the Hawaiian word ʿio

Definition for io (2 of 7)

Io1
[ ahy-oh, ee-oh ]
/ ˈaɪ oʊ, ˈi oʊ /

noun

Classical Mythology. 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.
Astronomy. a large volcanically active moon of the planet Jupiter.

Definition for io (3 of 7)

Io2
[ ahy-oh, ee-oh ]
/ ˈaɪ oʊ, ˈi oʊ /

noun, plural I·os.

Definition for io (4 of 7)

Io

Symbol, Chemistry.

ionium.

Definition for io (5 of 7)

Io.

Iowa.

Definition for io (6 of 7)

Definition for io (7 of 7)

I.O.

or IO, i.o.


indirect object.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for io

British Dictionary definitions for io (1 of 5)

io

the internet domain name for

British Indian Ocean Territory

British Dictionary definitions for io (2 of 5)

Io1
/ (ˈaɪəʊ) /

noun

Greek myth a maiden loved by Zeus and turned into a white heifer by either Zeus or Hera

British Dictionary definitions for io (3 of 5)

Io2
/ (ˈaɪəʊ) /

noun

the innermost of the four Galilean satellites of Jupiter, displaying intense volcanic activity. Diameter: 3640 km; orbital radius: 422 000 km

British Dictionary definitions for io (4 of 5)

Io3

the chemical symbol for

ionium

British Dictionary definitions for io (5 of 5)

I/O

abbreviation for

input/output
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for io

Io
[ īō, ēō ]

One of the four brightest satellites of Jupiter and the fifth in distance from the planet. It was first sighted by Galileo. See Note at moon.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.