How to Use dilation in a Sentence

dilation

noun
  • This means that the pain occurs due to the dilation and swelling of blood vessels.
    — Carla Delgado, Discover Magazine, 11 Aug. 2023
  • This blood vessel dilation explains why your ears get red and painful in the cold.
    — Max G. Levy, WIRED, 6 Jan. 2024
  • These standard tests required pupil dilation, which required one of two things.
    — Gayle Carline, Orange County Register, 6 Jan. 2017
  • This helps the dilation of the uterus at the time of delivery and reduces bleeding.
    — Madeeha Ahmed, Smithsonian, 6 Feb. 2017
  • Scientists used to think that the actual pain of migraines was from the dilation of blood vessels.
    — Anna Funk, Discover Magazine, 27 Mar. 2021
  • First, she would be given medication to induce dilation, and sent to her hotel room to wait.
    — New York Times, 1 Aug. 2022
  • The chairs — which are still used by UHealth — track eye movements and pupil dilation to help detect brain injury.
    — Samantha J. Gross, miamiherald, 23 July 2017
  • The laws include a ban on a procedure known as dilation and evacuation.
    — Andrew Demillo, The Seattle Times, 29 July 2017
  • Surgery was one way to do that, with a specialized procedure known as a dilation and evacuation.
    — Josh Replogle, CNN, 5 Dec. 2021
  • Once one of these three methods is performed, the dilation and evacuation procedure can then be used, the state said.
    — Bill Rankin, ajc, 25 May 2018
  • The receptors control constriction and dilation in the smooth muscle fibers in the walls of these blood vessels.
    — Kristen Rogers, CNN, 21 Mar. 2024
  • Red eyes are often observed due to the dilation of blood vessels in the eyes caused by delta-8's psychoactive effects.
    — Amber Smith, Discover Magazine, 27 July 2023
  • The receptors control constriction and dilation in the smooth muscle fibers in the walls of these blood vessels.
    — Kristen Rogers, CNN Money, 12 Oct. 2025
  • Clark explained that the swelling is due to an increase in hormones during pregnancy, which causes basal dilation.
    — Kalhan Rosenblatt, NBC News, 29 Dec. 2022
  • Fat lines the outsides of our blood vessels, giving them support and helping to regulate dilation.
    — Bethany Brookshire, Scientific American, 27 Mar. 2025
  • As the images flashed across a white background, researchers used an infrared eye tracker to measure the dilation of the babies’ pupils.
    — Brigit Katz, Smithsonian, 1 Nov. 2017
  • Quiros suggests bringing sunglasses with you to your appointment since dilation can make your eyes sensitive to light.
    — Korin Miller, Verywell Health, 14 Aug. 2024
  • This occurs due to blood vessel dilation caused by the compound's interaction with receptors in the eye.
    — Amber Smith, Discover Magazine, 16 Aug. 2023
  • One of them is pupil dilation and contraction, which work in in synchrony with the norepinephrine levels.
    — Ars Technica, 20 Jan. 2025
  • The laws being challenged include a ban on a procedure known as dilation and evacuation.
    — Andrew Demillo, The Seattle Times, 13 July 2017
  • Dimethyl sulfoxide infused in the vein has also been shown to cause dilation of the blood vessels, hypotension (low blood pressure), and chest pain.
    — Kirstyn Hill, Pharmd, Mph, Health, 22 Sep. 2024
  • Tiny changes of less than half a degree in the lattice twist (rotation and dilation) can have significant effects on these patterns.
    — Adrienne Bernhard, Popular Mechanics, 15 June 2023
  • There's a lot of different things that can be happening, like vascular dilation, that can be caused for so many different reasons.
    — Celia Shatzman, Forbes, 2 Jan. 2025
  • Nitric oxide is released from the interior of the artery, causing dilation.
    — Bryant Stamford, The Courier-Journal, 12 May 2022
  • This is accompanied by dilation of the blood vessels leading to the kidney and an increase in the pressure on the filtering units.
    — Alex Hutchinson, Outside Online, 10 Sep. 2024
  • With the help of an infrared eye tracker, the study authors found that people who had a stronger sense of rushing into a tunnel experienced greater pupil dilation.
    — Manasee Wagh, Popular Mechanics, 13 June 2022
  • Most of the men and women who reported a response to the illusion also experienced pupil dilation.
    — Manasee Wagh, Popular Mechanics, 13 June 2022
  • The law deals with a certain type of dilation and evacuation, or D&E, procedure.
    — John Hanna, ajc, 27 Mar. 2023
  • The blood vessels on the surface of the brain dilate in an attempt to transport the acidity away from the sensitive neurons; this dilation causes a headache.
    — Rachel Lance, Smithsonian Magazine, 10 Mar. 2020
  • That’s enough to deduce details about a user’s eyes, including the direction of their gaze, their eye position in relation to the screen, and the dilation of their pupils.
    — IEEE Spectrum, 13 Dec. 2023

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'dilation.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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