dilution

noun

di·​lu·​tion dī-ˈlü-shən How to pronounce dilution (audio)
də-
1
: the action of diluting : the state of being diluted
2
: something (such as a solution) that is diluted
3
: a lessening of real value (as of equity) by a decrease in relative worth
specifically : a decrease of per share value of common stock by an increase in the total number of shares

Examples of dilution 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.
Democratic voting rights group estimate that gutting the Voting Rights Act’s protections against vote dilution could help Republicans win an additional 27 House seats − including 19 that would directly result from invalidating the law’s protections. Maureen Groppe, USA Today, 15 Oct. 2025 In 2024, the court overruled a lower court’s finding of racial vote dilution in South Carolina. Sam D. Hayes, The Conversation, 13 Oct. 2025 Some see it as a dilution of academic purpose or a threat to faculty independence. Sasha Rogelberg, Fortune, 7 Oct. 2025 Supporters of Section 2 argue that the law remains essential to prevent vote dilution and ensure that minority voters can elect candidates of their choice. Robert Alexander, MSNBC Newsweek, 6 Oct. 2025 See All Example Sentences for dilution

Word History

Etymology

borrowed from Late Latin dīlūtiōn-, dīlūtiō, from Latin dīluere "to wash away, dissolve, make thinner by mixing with water" + -tiōn-, -tiō, suffix of verbal action — more at dilute entry 1

First Known Use

1646, in the meaning defined at sense 1

Time Traveler
The first known use of dilution was in 1646

Browse Nearby Words

Cite this Entry

“Dilution.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dilution. Accessed 20 Oct. 2025.

Kids Definition

dilution

noun
di·​lu·​tion dī-ˈlü-shən How to pronounce dilution (audio)
də-
1
: the action of diluting : the state of being diluted
2
: something (as a solution) that is diluted

Medical Definition

dilution

noun
di·​lu·​tion dī-ˈlü-shən, də- How to pronounce dilution (audio)
1
: the action of diluting : the state of being diluted
2
: something (as a solution) that is diluted

Legal Definition

dilution

noun
di·​lu·​tion dī-ˈlü-shən, də- How to pronounce dilution (audio)
1
: a lessening of real value (as of equity) by a decrease in relative worth
specifically : a decrease of the value per share of common stock caused by an increase in the total number of shares
2
: a lessening of the value of a trademark that is caused by use of the mark by another and that creates potential confusion on the part of the consumer
3
: a weakening of the voting rights of a group of citizens (as a minority) because the representatives they elect have no greater legislative power than the representatives elected by smaller voting groups

More from Merriam-Webster on dilution

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