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.
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
From Hawaiian ʿio
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Tan left Apple to join Ive’s AI device startup io Products, which subsequently merged with OpenAI.
From The Wall Street Journal ● Jul. 10, 2026
Tan spent 24 years at Apple, most recently as vice president of product design for the iPhone and Apple Watch, before co-founding io Products, which OpenAI acquired for roughly $6.5 billion in 2025.
From Barron's ● Jul. 10, 2026
Tan left Apple to found io Products alongside Jony Ive, Apple’s former chief design officer, and other leaders.
From MarketWatch ● Jul. 10, 2026
The idea for io, which Sir Jony founded last year, grew out of several years of quiet collaboration between the two companies, according to the announcement.
From BBC ● May 21, 2025
Wasn't quite midday so the heat wasn’t overbearing and there weren’t no heat waves across the fields io make the eye see things funny.
From "Life Is So Good" by George Dawson
By adding a grain transport component, the researchers could trace the journeys of icy particles and reconstruct the physical and chemical history of the material that formed Europa, Ganymede, Callisto and Io.
From Science Daily ● Mar. 1, 2026
“The intriguing feature could improve our understanding of volcanism not only on Io but on other worlds as well.”
From Salon ● Feb. 3, 2025
The spacecraft produced the first high-resolution images of the four planets, the rings of Jupiter, Uranus and Neptune, lightning on Jupiter and lava lakes that revealed active volcanoes on Jupiter’s moon Io.
From New York Times ● Jun. 14, 2024
According to the paper's first author, Al Conrad, the eruptions on Io, the most volcanically active body in the solar system, dwarf their contemporaries on Earth.
From Science Daily ● May 30, 2024
My father told me the names: Io, Europa, Ganymede, and one more…He died later that summer.
From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin
They are, however, frequently abbreviated thus: Iowa, Ia. or Io.;
From Higher Lessons in English A work on English grammar and composition by Kellogg, Brainerd
Tuesday’s Google I/O developer conference failed to pack the sizzle that some investors were hoping for.
From MarketWatch ● May 20, 2026
Google introduced Gemini 3.5 Flash on Tuesday at its annual I/O developers conference in California.
From Barron's ● May 19, 2026
Gmail Live, announced at this week’s Google I/O conference, allows you to ask your inbox questions aloud, like what’s your flight reservation number or the door code to your Airbnb.
From The Wall Street Journal ● May 19, 2026
Google made the announcement as part of its annual I/O developer conference in Mountain View.
From Los Angeles Times ● May 20, 2025
In Great Britain, `fred', `jim' and `sheila' are common metasyntactic variables because their uppercase versions were official names given to the 3 memory areas that held I/O status registers on the lovingly-remembered BBC Microcomputer!
From The Jargon File, Version 4.2.2, 20 Aug 2000 by Steele, Guy L.
The senior coalition officer said the insurgents who supported the Qatar process “didn’t do a good I.O. campaign to sell it to their people.”
From New York Times ● Oct. 2, 2012
Between A. F. of L. and C. I.O. there still exists a thin, technical tie: the rebellious C. I. O. unions were suspended last year but they have not yet been expelled.
From Time Magazine Archive
Mr. Green next day notified the Canadian Trades and Labor Congress that it must expel 30,000 C. I.O. members or renounce 120,000 A. F. of L. members.
From Time Magazine Archive
To these three the President added Sidney Hillman, pink-cheeked, blond, curly-haired, 53, chief of Amalgamated Clothing Workers of America, vice president of C. I.O., a "labor statesman," no bumbler, coldly intellectual.
From Time Magazine Archive
I see them shaking their fists in the face of the parietal tutor.—Oration before H.L. of I.O. of O.F.,
From A Collection of College Words and Customs by Hall, Benjamin Homer
Post-mortem examinations are to be carried out on Tuesday on two teenagers from Dublin who died on the Greek island of Ios.
From BBC ● Jul. 3, 2023
Santorini, Mykonos and Ios, Greek islands known for their party scenes, now offer relaxing alternatives.
From New York Times ● Aug. 24, 2022
In October, they interrogated a submarine cable that connects the islands of Santorini and Ios.
From Science Magazine ● Dec. 8, 2021
Last summer, I had lunch in a beach-side taverna on the island of Ios, which I had last visited when it was a hippy haven in the 1970s.
From BBC ● Jul. 24, 2015
The islands called the Sporades lie to the south and east of the Cyclades, among which are Amorgo, Ios, Sicinos, Thera, and Anaphe—some of which are barren, and others favorable to the vine.
From Ancient States and Empires by Lord, John
This week the app overtook WeChat and TikTok to become the most-downloaded app for Apple and ios devices in China, though its popularity is not entirely due to merit.
From The Guardian ● Feb. 15, 2019
There are a lot of closeups and difficult-to-decipher geometry, but the intent here is clear — Sony is ios going to show us what the PS4 actually looks like.
From Forbes ● May 20, 2013
Android is much better, in my opinion, because it is not afraid to make drastic changes to its system. ios has looked similar since the start.
From Time ● Apr. 21, 2013
The price is 28,000 10000 in fives and ios 18000 50 and zoos.
From Time Magazine Archive
Only the brooding golden backlighting that makes theaters out of Parrish's scenar ios bespeaks a pre-neon sensibility.
From Time Magazine Archive
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
