dilation

noun
di·​la·​tion | \ dī-ˈlā-shən \

Definition of dilation

1 : the act or action of dilating : the state of being dilated : expansion, dilatation
2 : the action of stretching or enlarging an organ or part of the body

Examples of dilation in a Sentence

Recent Examples on the Web

Laukkanen hypothesizes that improved arterial flexibility and dilation reduces the amount of force that moving blood exerts on the blood vessel walls. SELF, "Does the Steam Room at the Gym Actually Do Anything?," 4 Jan. 2019 In other words, the drone would be able to detect barometers of a person's energy such as blood pressure, pupil dilation, and facial expressions, and then give them a caffeinated boost as a result. David Grossman, Popular Mechanics, "IBM Files Patent For a Coffee Delivery Drone," 24 Aug. 2018 In June 2017, Texas Governor Gregg Abbott signed a law banning the most common method of ending a pregnancy in the second trimester, known as dilation and evacuation, during which the fetus is removed from the uterus. Kayla Webley Adler, Marie Claire, "If Brett Kavanaugh Is Confirmed, These 5 Scary Things Could Easily Happen," 31 July 2018 Their collective had released only a few songs publicly as of this weekend, but fans got to hear an album's worth of Vernon’s signature falsetto and folktronica dilations combined with Dessner’s guitar and vocals. Erin Richards, Milwaukee Journal Sentinel, "Eaux Claires IV review: Day 1 music," 7 July 2018 Although the patient eventually had her surgery here, the delay resulted in additional uncomfortable dilations in her home state. Nick Manetto, STAT, "Medicaid’s unnecessary barriers delay care for children with complex needs," 1 May 2018 And even after a month of discomfort and blood loss, up to 20 percent of women will still have pregnancy tissue lingering in the uterus and require a dilation and evacuation. Dorothy Novick, STAT, "FDA shouldn’t allow politics to hurt women suffering miscarriage," 22 June 2018 As further research would soon reveal, the primary cause of migraine pain is not dilation of blood vessels in the head, and the primary factor by which triptans help is not by constricting those vessels. R. Allan Purdy, Scientific American, "Can Anything Stop My Migraine?," 1 May 2017 Once one of these three methods is performed, the dilation and evacuation procedure can then be used, the state said. Bill Rankin, ajc, "Appeals court seems unlikely to uphold ‘fetal demise’ abortion law," 25 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dilation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of dilation

15th century, in the meaning defined at sense 1

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Last Updated

18 Jan 2019

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The first known use of dilation was in the 15th century

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More Definitions for dilation

dilation

noun
di·​la·​tion | \ dī-ˈlā-shən \

Medical Definition of dilation

1 : the state of being dilated : dilatation
2 : the action of stretching or enlarging an organ or part of the body cervical dilation dilation of the pupil with atropine

More from Merriam-Webster on dilation

Rhyming Dictionary: Words that rhyme with dilation

Nglish: Translation of dilation for Spanish Speakers

Comments on dilation

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tremendous in size, volume, or degree

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