computer
Americannoun
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a programmable electronic device designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations. Mainframes, desktop and laptop computers, tablets, and smartphones are some of the different types of computers.
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a computer program or algorithm.
A computer can write a pop tune, but there's no guarantee it will be a hit.
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a person who computes; computist.
noun
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a device, usually electronic, that processes data according to a set of instructions. The digital computer stores data in discrete units and performs arithmetical and logical operations at very high speed. The analog computer has no memory and is slower than the digital computer but has a continuous rather than a discrete input. The hybrid computer combines some of the advantages of digital and analog computers See also digital computer analog computer hybrid computer
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( as modifier )
computer technology
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a person who computes or calculates
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of computer
First recorded in 1640–50; compute + -er 1; compare Middle French computeur
Explanation
Unless you're living in a cave cut off from humanity, you've seen these electronic machines with a screen, keyboard, and brain that stores massive amounts of information. Computers are ubiquitous in offices, airports, schools...even caves cut off from humanity. Though computers are a thoroughly modern invention, the root word that gave them their name dates all the way back to Roman times. Tech geeks dreamed up computer by embellishing the English word compute, which means "to calculate." Compute, in turn, comes from Latin com-, "with" and putare, "to reckon." So, your computer is a device that helps you reckon — or think. It also comes in handy for email and every type of entertainment imaginable.
Vocabulary lists containing computer
Units 2–3
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Computer Terms
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Video Game Vocabulary
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
The researchers also used advanced computer simulations to test whether this explanation could reproduce the behavior seen by JWST.
From Science Daily ● Jul. 18, 2026
However, the signals from computer weather models are rather mixed meaning there is a lot of uncertainty.
From BBC ● Jul. 18, 2026
“I don’t really want them to use something smaller, typically because you end up losing human time versus computer time,” Thawar said.
From The Wall Street Journal ● Jul. 17, 2026
Micron’s 2026 performance is in line with a very hot market for makers of memory chips and computer storage memory peripherals.
From MarketWatch ● Jul. 17, 2026
She bent over the computer desk and wrote two headings on the top of her paper: What we know and What we think.
From "Found" by Margaret Peterson Haddix
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The cameras will act more like computers that also extract data and create 3-D digital twins of the action, which can be used for replays and other viewing experiences.
From The Wall Street Journal ● Jul. 12, 2026
"Open-source" or "open-weight" models work differently: the developers release the model's core files for anyone to download, modify and run on their own computers.
From Barron's ● Jul. 9, 2026
Autonomous vehicles rely on many of the same batteries, sensors, chips and onboard computers as electric cars.
From BBC ● Jul. 6, 2026
Trump also had touted the company’s computers during remarks in February, when he thanked the Dells for their contributions.
From MarketWatch ● Jul. 6, 2026
There were computers, a virtual reality station, and giant touch-screen monitors on two of the walls.
From "City Spies" by James Ponti
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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.