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:
Quakebot, a computer application that monitors the latest earthquakes detected by the USGS, contributed to this report.
From Los Angeles Times ● Jul. 29, 2026
One mutual-fund manager’s reaction: “If people start believing this random-walk garbage and switch to index funds, a lot of $80,000-a-year portfolio managers and analysts will be replaced by $16,000-a-year computer clerks. It just can’t happen.”
From The Wall Street Journal ● Jul. 28, 2026
Insatiable demand for computer memory and other technologies needed to build artificial intelligence boomed again in the second quarter, and could spur another above-average increase in economic growth.
From MarketWatch ● Jul. 27, 2026
Helton was working on her computer on her back porch when visited by a ProPublica reporter.
From Salon ● Jul. 27, 2026
I open my computer and search for list poems, and tons of examples come up.
From "Keeping Pace" by Laurie Morrison
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He also helped investigate ways to improve the production of materials in space for use in high performance computers and electronics.
From Science Daily ● Jul. 27, 2026
The field of lightweight, mid-engine sports cars is shrinking as manufacturers move on and computers take over more of the driving.
From The Wall Street Journal ● Jul. 25, 2026
The information from 2018 gave detectives a second strand of evidence, and grounds to monitor every keystroke that Greer made on police computers.
From BBC ● Jul. 23, 2026
Tennessee: Clothing and shoes under $100 per item and computers under $1,500 are tax-free between July 31 and Aug. 2.
From MarketWatch ● Jul. 23, 2026
Mr. Shephard comes over from time to time to read what I have, and when I’m done, I sit at one of the computers to type it up.
From "Isaiah Dunn Is My Hero" by Kelly J. Baptist
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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.