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Synonyms

thickening

American  
[thik-uh-ning] / ˈθɪk ə nɪŋ /

noun

  1. a making or becoming thick.

  2. a thickened part or area; swelling.

  3. something used to thicken; thickener.


thickening British  
/ ˈθɪkənɪŋ /

noun

  1. something added to a liquid to thicken it

  2. a thickened part or piece

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of thickening

First recorded in 1570–80; thicken + -ing 1

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:

On a humbler scale, Kail poetically marks the passage of time with a thickening palm tree.

From Los Angeles Times Jul. 9, 2026

That uplift helped support additional thickening of coastal ice.

From Science Daily May 29, 2026

For hypertrophic cardiomyopathy—the thickening of heart muscles—it was 56 steps.

From The Wall Street Journal Apr. 19, 2026

These polar "geoengineering" techniques aim to cool the planet in unconventional ways, such as artificially thickening sea-ice or releasing tiny, reflective particles into the atmosphere.

From BBC Sep. 9, 2025

Although it was a subtle change, he understood what Leader had meant when he said that Forest was thickening.

From "Messenger" by Lois Lowry

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