thickening

noun

thick·​en·​ing ˈthi-kə-niŋ How to pronounce thickening (audio)
ˈthik-
Synonyms of thickeningnext
1
: a thickened part or place
2
: the act of making or becoming thick
3
: something used to thicken

Examples of thickening 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.
Pulmonary fibrosis, a thickening and damaging of the lungs, would eventually force him into retirement. CBS News, 26 May 2026 Pulmonary fibrosis, a thickening and damaging of the lungs, would eventually force him into retirement. ABC News, 25 May 2026 The thickening afternoon light gave the square an air of drama, like a movie set readied for action, but there was no one around to cast as extras; chattering tourists fill it only during the brief summer high season. Kevin West, Travel + Leisure, 8 May 2026 With all this noticing, there was a slowing, a thickening. Literary Hub, 1 May 2026 See All Example Sentences for thickening

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of thickening was in the 15th century

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Cite this Entry

“Thickening.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thickening. Accessed 29 May. 2026.

Kids Definition

thickening

noun
thick·​en·​ing
1
: the act of making or becoming thick
underwent a gradual thickening
2
: a thickened part or place
3
: something used to thicken
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