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io

or ’i·o

[ ee-oh ]
/ ˈi oʊ /
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noun, plural i·os.
a small, solitary hawk, Buteo solitarius, having two plumage phases and breeding only on the Island of Hawaii, where it is a rare species and the only indigenous bird of prey: classified as near threatened.
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Also called Ha·wai·ian hawk [huh-wahy uhn hawk, -wah yuhn] /həˈwaɪ ən ˈhɔk, -ˈwɑ yən/ .

Origin of io

From Hawaiian ʿio

Other definitions 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.

Other definitions for io (3 of 7)

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

noun, plural I·os.

Other definitions for io (4 of 7)

Io3

Symbol, Chemistry.

Other definitions for io (5 of 7)

Io.

abbreviation
Iowa.

Other definitions for io (6 of 7)

Other definitions for io (7 of 7)

I.O.

or IO, i.o.


abbreviation
indirect object.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use io in a sentence

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.
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