key in
Britishverb
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.
Both Leavitt and Hegseth, however, mentioned that the United States wants to ensure Iran does not have stockpiles of enriched uranium, the fissile material that is key in developing nuclear weapons.
From Los Angeles Times • Apr. 8, 2026
Google’s researchers said a quantum computer may be on the horizon that’s powerful enough to crack a bitcoin wallet’s secret key in as few as nine minutes, potentially giving attackers access to investors’ funds.
From MarketWatch • Mar. 31, 2026
It is also key in fiber-optic manufacturing and defense applications.
From The Wall Street Journal • Mar. 31, 2026
The former Arsenal midfielder was one of a number of summer signings the Black Cats made, but has arguably been the most influential, with his experience and leadership key in many games.
From BBC • Mar. 3, 2026
She turned the key in the ignition even before she asked, "What did you get?"
From "The View From Saturday" by E.L. Konigsburg
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.
