from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having been widened; expanded.
  • adj. Distended.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. Simple past tense and past participle of dilate.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Expanded; enlarged.
  • adj. Widening into a lamina or into lateral winglike appendages.
  • adj. Having the margin wide and spreading.

from The Century Dictionary and Cyclopedia

  • Expanded; extended; enlarged.


Sorry, no etymologies found.


  • The heart with noncompaction can be dilated with decreased pumping function as in dilated cardiomyopathy (see above) or can have normal pumping function.


  • She could hardly bear to look on the livid face, the closed eyes, the thin dilated nostrils, and the painful expression of powerlessness that met her sight.

    The Semi-Attached Couple

  • GUPTA: Three hours. no heartbeat, no spontaneous respirations, pupils are dilated, which is an indication that the brain as swollen as well.

    CNN Transcript Oct 13, 2009

  • His pupils were actually dilated, which is a sign that his brain may have had a significant insult.

    CNN Transcript Jul 9, 2001

  • Georgina developed a heart condition called dilated cardiomyopathy as a baby.

    Evening Mail news round-up

  • A number of conditions put the heart at risk for failing at this daunting task, such as chronic diseased heart valves, or intrinsically weak heart muscle cells (known as dilated cardiomyopathy).

    U.S. News

  • The baby starts moving down and once you are fully dilated, that is the child has moved down, pushing begins.


  • Sleep terrors often begin with a "bloodcurdling" scream or shout, and cause behavior suggesting extreme terror, such as dilated pupils, rapid breathing, racing heart, sweating, and extreme agitation.


  • But after three hours of no heartbeat, no spontaneous respiration, her pupils were dilated which is usually an indication that the brain has been damaged somehow.

    CNN Transcript Oct 15, 2009

  • The garment having been taken off, the accused, by a committee of matrons, was at length brought in, and 'dilated' so as to show it in its utmost circumference, but my great hall was too narrow for the experiment; for before it was half unfolded it described so immoderate a circle, that the lower part of it brushed upon my face as I sat in the chair of judicature.

    History of English Humour, Vol. 2 (of 2)


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