dilate

Definition of dilatenext

Synonym Chooser

How does the verb dilate differ from other similar words?

Some common synonyms of dilate are amplify, distend, expand, inflate, and swell. While all these words mean "to increase in size or volume," dilate applies especially to expansion of circumference.

dilated pupils

When is amplify a more appropriate choice than dilate?

In some situations, the words amplify and dilate are roughly equivalent. However, amplify implies the extension or enlargement of something inadequate.

amplify the statement with details

When can distend be used instead of dilate?

The words distend and dilate are synonyms, but do differ in nuance. Specifically, distend implies outward extension caused by pressure from within.

a distended abdomen

Where would expand be a reasonable alternative to dilate?

Although the words expand and dilate have much in common, expand may apply regardless of the manner of increase (such as growth, unfolding, addition of parts).

a business that expands every year

When is it sensible to use inflate instead of dilate?

The synonyms inflate and dilate are sometimes interchangeable, but inflate implies expanding by introduction of air or something insubstantial and suggests a vulnerability to sudden collapse.

an inflated ego

When would swell be a good substitute for dilate?

The words swell and dilate can be used in similar contexts, but swell implies gradual expansion beyond a thing's original or normal limits.

the bureaucracy swelled to unmanageable proportions

Example Sentences

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.
Recent Examples of dilate Pupils dilate, breathing accelerates, heart rate and blood pressure rise. Jennifer Borresen, USA Today, 15 Oct. 2025 Doctors gave her Pitocin, a medication used to provoke contractions, and a Foley balloon, which is a catheter-​like device that gets the cervix to dilate. Hannah Sacks, PEOPLE, 14 Oct. 2025 For the test, your provider will place drops in your pupils to dilate (widen) them, which gives a clearer view of your eye structures. Lindsay Curtis, Health, 10 Sep. 2025 In dim light, cat pupils dilate into circles, humanizing their eyes. Tao Lin, Harpers Magazine, 20 Aug. 2025 See All Example Sentences for dilate
Recent Examples of Synonyms for dilate
Verb
  • In the last 20 days, their belly will appear distended, and their nipples and breast tissue will be noticeably swollen.
    Maria Azzurra Volpe, MSNBC Newsweek, 17 Nov. 2025
  • The fear grew when her 1-year-old boy's belly started to distend and his ribs were pressed against his skin.
    Brad Schmitt, Nashville Tennessean, 19 Oct. 2025
Verb
  • Each one of the over 300 locations had to be 300 times less likely to fail than if there had been only one, pumping up the design, manufacturing and testing requirements – and inflating the cost.
    Martin Elvis, The Conversation, 9 Jan. 2026
  • The balloon is inflated to about 160 cc or more, gently spreading the tissue without cutting.
    Essence, Essence, 7 Jan. 2026
Verb
  • The committee approved Lucas’s amendment and approved the recommendation to increase funding for the temporary jail.
    Ben Wheeler, Kansas City Star, 7 Jan. 2026
  • Iwobi’s movement drags Ladislav Krejci wider, increasing the space between the lines and creating a clear passing angle for Calvin Bassey.
    Ahmed Walid, New York Times, 7 Jan. 2026
Verb
  • Japanese maple trees can also be planted in a container filled with a quality potting mix augmented with compost and sharp sand.
    Luke Miller, Better Homes & Gardens, 6 Nov. 2025
  • Intelligent machines augment intelligent humans, driving a geometric expansion of what humans can do.
    Reed Albergotti, semafor.com, 6 Nov. 2025
Verb
  • Flywing also plans to expand the competitive side of the platform.
    Aamir Khollam, Interesting Engineering, 9 Jan. 2026
  • Neutrality allowed the nation to build strength, expand westward, and avoid the ideological contagions sweeping the continent.
    Daniel Ross Goodman, The Washington Examiner, 9 Jan. 2026
Verb
  • Orbán, however, denied this, claiming that the Croatian government would need to enlarge the pipeline to meet Hungary’s needs.
    Christian Edwards, CNN Money, 7 Nov. 2025
  • With several brands relocating to the expansion, others in older sections such as Prada, Balenciaga, Saint Laurent and Brioni, will be able to enlarge their shops.
    David Moin, Footwear News, 6 Nov. 2025
Verb
  • As the day wears on, the crowd swells to a formidable throng.
    Rhea Mogul, CNN Money, 9 Nov. 2025
  • Per BrightOcular, potential complications include infections, high pressure in the eye, glaucoma, inflammation of the iris, swelling in the cornea, loss of cells around the cornea, deterioration of the iris and more.
    Raven Brunner, PEOPLE, 8 Nov. 2025
Verb
  • The researchers emphasized that policy support is crucial for accelerating this transition and building a robust recycling system.
    Jijo Malayil, Interesting Engineering, 8 Nov. 2025
  • Business leaders say that such policies risk accelerating an exodus of companies, diminishing the city’s commercial tax base, and ultimately affecting services and jobs essential to millions of New Yorkers.
    Hollie Silverman, MSNBC Newsweek, 8 Nov. 2025

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Cite this Entry

“Dilate.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dilate. Accessed 11 Jan. 2026.

More from Merriam-Webster on dilate

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