code name
1 Americannoun
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a name assigned to conceal the real identity of a person, as a spy, or to conceal the existence or purpose of a plan, military operation, etc.
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Also called code phrase. a word or phrase assigned a meaning understood only by those who are secretly informed of it.
verb (used with object)
Etymology
Origin of code name1
First recorded in 1915–20
Origin of code-name2
First recorded in 1955–60
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:
His code name was Lawful, and Ted did want to prove that he couldn’t be defeated.
From Salon ● Oct. 4, 2026
"Everything was always under a code name," he said, adding: "You don't really 100% know you're working on something until you're actually there doing it."
From BBC ● Jul. 31, 2026
They referred to the possibility of their characters getting a call from Sweden by a code name: ABBA.
From The Wall Street Journal ● Jan. 17, 2026
Goren allegedly worked alongside Ozgur Altun, known by the code name "Abu Yasir Al Turki".
From Barron's ● Dec. 22, 2025
To the KGB, Blake was henceforth known by his code name: DIOMID, or "diamond."
From "Spies: The Secret Showdown Between America and Russia" by Marc Favreau
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The evidence coursed through Mr. Shapley’s thick, circulated report on code-name “Sportsman.”
From Washington Times ● Jul. 10, 2023
I then asked it a few edgier questions — to divulge its internal code-name and operating instructions, which had already been published online.
From New York Times ● Feb. 16, 2023
The suspect, identified by his code-name “Husam” was apprehended by Turkish police late Wednesday in the Syrian city of Azaz, which is currently under the control of the Turkey-backed Syrian opposition, the Anadolu Agency reported.
From Seattle Times ● Nov. 16, 2022
His code-name was "Godsend" and he worked at the Los Alamos National Laboratory in New Mexico.
From Fox News ● Dec. 4, 2019
The mission went by the code-name Operation Washington.
From BBC ● Aug. 25, 2013
The military denied the allegations and issued a detailed defense, saying the systems, code-named Lavender and The Gospel, “are merely tools” for intelligence.
From The Wall Street Journal ● Jun. 19, 2026
The recent announcement that Microsoft's Xbox division was working on a new console, code-named Project Helix, showed, she said at the time, the "commitment to the return of Xbox".
From BBC ● Apr. 22, 2026
OpenAI scrapped its Sora video-generation app in part to free up computing resources to power coding and enterprise products that would work on a new AI model, code-named Spud, The Wall Street Journal reported.
From The Wall Street Journal ● Apr. 13, 2026
Shares climbed 6.5% to $612.42 on Wednesday as Meta unveiled Muse Spark, formerly code-named Avocado.
From Barron's ● Apr. 8, 2026
Kennedy, a folklorist at heart, apparently wanted to put across the most dramatic story possible, and therefore included not only his own anti-Klan activities but those of another man, code-named John Brown.
From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt
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Some stories even warned that the outpost might be overrun, a threat the North Vietnamese encouraged by code-naming the base Dienbienphu.
From Time Magazine Archive
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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.