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 Pomegranates are rich in polyphenols, which may dilate blood vessels and lower blood pressure. Carrie Madormo, Verywell Health, 23 Dec. 2025 Heat applied to the body tends to dilate blood vessels, which improves blood flow, according to Highett Podiatry. Hillary Maglin, Travel + Leisure, 18 Dec. 2025 Near the speed of light, durations of time dilate and lengths appear to contract along the direction of motion in a velocity-dependent way, with each unique observer seeing different values. Big Think, 5 Nov. 2025 To heal, the body releases a range of substances (mainly hormones and inflammatory molecules) that dilate blood vessels to help blood and immune cells reach the injured tissue. Julia Ries Wexler, Outside, 16 Oct. 2025 See All Example Sentences for dilate
Recent Examples of Synonyms for dilate
Verb
  • The fragile skeleton of her ego threatened to snap under the pressure of the animal forces that pressed down on her consciousness, her narrative mind sagging and distended beneath pitiless and grandiose feeling.
    Mary Ann Grossmann, Twin Cities, 11 Jan. 2026
  • 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
Verb
  • An avalanche airbag backpack that inflates after the skier pulls the trigger giving the person a chance to stay above or close to the surface during an avalanche.
    ABC News, ABC News, 18 Feb. 2026
  • Ahead of its official launch, the Tokyo Air Jordan 11 Retro is commanding premium aftermarket prices, although some of the asking prices may not be as inflated as expected.
    Riley Jones, Footwear News, 18 Feb. 2026
Verb
  • The concern is not only the surge in killings, but the increasing brazenness with which they are carried out.
    Zeena Saifi, CNN Money, 15 Feb. 2026
  • For example, rising temperatures have direct harms on health by increasing risk of dehydration and causing more stress on the heart.
    Mary Kekatos, ABC News, 14 Feb. 2026
Verb
  • HoloRadar augments the safety of autonomous robots by complementing existing sensors rather than replacing them.
    Prabhat Ranjan Mishra, Interesting Engineering, 16 Feb. 2026
  • Breaking roles into micro-tasks allows organizations to see where automation can remove friction, where AI can augment human judgment, and where human contribution remains essential.
    Keith Ferrazzi, Fortune, 14 Feb. 2026
Verb
  • Integrating unmanned logistics The Army continues to expand its use of unmanned systems across air and ground domains.
    Aamir Khollam, Interesting Engineering, 17 Feb. 2026
  • However, according to a draft of its charter, its mission has since expanded to address conflicts worldwide.
    Alexandra Banner, CNN Money, 16 Feb. 2026
Verb
  • But the company decided to lift the ban on Instagram filters that alter facial features, such as enlarging a person’s lips or slimming their nose, instead deciding to stop recommending them, Mosseri said.
    Samantha Delouya, CNN Money, 11 Feb. 2026
  • Recent studies have shown that long-term missions can actually enlarge the brain’s ventricles, potentially impacting cognitive speed and waste removal.
    Mrigakshi Dixit, Interesting Engineering, 10 Feb. 2026
Verb
  • JPMorgan sees shares of AeroVironment rising as demand for drones and space capabilities swell.
    Lisa Kailai Han, CNBC, 17 Feb. 2026
  • The League of Nations is struggling for legitimacy as Germany and Japan withdraw, driven by swelling imperial ambitions.
    Jake Angelo, Fortune, 17 Feb. 2026
Verb
  • The event saw several European leaders and policymakers reiterate the need for greater defense spending to accelerate the continent's strategic autonomy, with discussions of a common nuclear shield.
    Hugh Leask, CNBC, 16 Feb. 2026
  • Its members are pushing legislation to accelerate encampment sweeps and eliminate a longstanding local requirement that the city offer shelter to residents when forcing them to move.
    Grant Stringer, Mercury News, 15 Feb. 2026

Browse Nearby Words

Cite this Entry

“Dilate.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dilate. Accessed 20 Feb. 2026.

More from Merriam-Webster on dilate

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!