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Definition of thinning

thinning

/ˈθɪn.ɪŋ/
thin · ning

Plural:thinnings
•
Past Simple:thinned
•
Past Participle:thinned
•
Present Participle:thinning
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thinning Lexical Profile

thinning Game Scores & Validity

• adjective

1

Becoming sparser, less dense, or less abundant (especially of hair, crowds, or vegetation).

Example

"He decided to wear a cap to protect his thinning hair from the harsh summer sun."

Synonyms
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Antonyms
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• verb

1

To make or become less dense, crowded, or numerous (present participle of thin).

Example

"The morning mist was rapidly thinning as the sun rose higher over the valley."


2

To make a liquid, sauce, or paint less viscous or concentrated by adding another substance (present participle of thin).

Example

"The chef is thinning the rich tomato soup with a splash of vegetable broth."

Synonyms
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Antonyms
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• noun

1

The act or process of becoming or making something less dense, crowded, or viscous.

Example

"Scientists have monitored the seasonal thinning of the polar ice caps over the past three decades."


2

The selective removal of certain plants, trees, or immature fruits to improve the growth and quality of those that remain.

Example

"Regular forest thinning helps reduce the risk of severe wildfires while promoting healthier tree growth."

Synonyms
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Antonyms
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• Rhymes for thinning

Cite this Entry


Wordmom. (2026). Definition of Thinning. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/thinning
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