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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.

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

From The Wall Street Journal • Apr. 19, 2026

"We lost a loved one," his voice thickening.

From BBC • Apr. 7, 2026

The process relies on carefully controlled streams of thyme extract, gelatin, sodium alginate -- a commonly used thickening agent in the food industry -- and oil.

From Science Daily • Jan. 17, 2026

I had been living my life for nearly four years with no cartilage in my hip, bone scraping bone, bone spurs forming and joint thickening.

From Salon • Dec. 13, 2024

In fact, I was looking out over the lawn to where the mist was thickening down around the poplar trees planted along the cart-track, when I finally introduced the topic of the previous year's dismissals.

From "The Remains of the Day" by Kazuo Ishiguro

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