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 (ī′ō, ē′ō)
1. Greek Mythology A maiden who was loved by Zeus and transformed by Hera into a heifer.
2. One of the four brightest satellites of Jupiter. It was first sighted by Galileo.

[Latin Īō, from Greek.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


the internet domain name for
(Computer Science) British Indian Ocean Territory


(Classical Myth & Legend) Greek myth a maiden loved by Zeus and turned into a white heifer by either Zeus or Hera


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


the chemical symbol for
(Elements & Compounds) ionium
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈaɪ oʊ, ˈi oʊ)

1. (in Greek myth) a woman loved by Zeus and changed by him into a heifer, which Hera claimed and put under Argus' guardianship.
2. a large volcanically active moon of Jupiter.




Computers. input/output.


or i.o.,

indirect object.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Io - (Greek mythology) a maiden seduced by ZeusIo - (Greek mythology) a maiden seduced by Zeus; when Hera was about to discover them together Zeus turned her into a white heifer
Greek mythology - the mythology of the ancient Greeks
2.Io - the closest of Jupiter's moons; has active volcanoes
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
When Lawrence Ragland was looking to expand his real estate holdings, he used funds he obtained from a cash-out option on a five-year interest-only loan.
(If it fails the coupon requirement, it must meet certain "specified portion" requirements that generally relate to stripped bonds.) The high-yield regular interest rules allow a FASIT to issue interest-only (IO) strips, etc.; however, special restrictions apply to high-yield regular interests.
Recognition of Impairment for an Investment in a Collateralized Mortgage Obligation Instrucment or in a Mortgage-Backed Interest-Only Certificate