key word

noun

: a word that is a key: such as
a
usually keyword : a significant word from a title or document used especially as an index to content
b
: a word exemplifying the meaning or value of a letter or symbol

Examples of key word in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Employees and members of Congress also have flagged concerns about the use of artificial intelligence (AI) to search contracts, websites and emails for key words such as diversity and climate change and to scan employee emails for anti-Trump sentiment. Dinah Voyles Pulver, USA Today, 19 May 2025 There have been a few tweaks to meal menus and logistical details, but the key word is tweaks. Mark Zeigler, San Diego Union-Tribune, 15 May 2025 The key words there are plan his night, Ventura replied. Jesse Zanger, CBS News, 15 May 2025 Lady Gaga and Bruno Mars almost made incredible history on a Billboard chart this week – the key word there being almost. Hugh McIntyre, Forbes.com, 7 May 2025 See All Example Sentences for key word

Word History

First Known Use

1762, in the meaning defined above

Time Traveler
The first known use of key word was in 1762

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Cite this Entry

“Key word.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/key%20word. Accessed 29 May. 2025.

Kids Definition

keyword

noun
key·​word
-ˌwərd
: a word of interest or significance
Last Updated: - Updated example sentences
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