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    dilate

    US /daɪˈlet,ˈdaɪˌlet/

    ・

    UK /daɪˈleɪt/

    C1TOEIC
    v.t./i.Verb (Transitive/Intransitive)(Of the iris of the eye, etc.) to get bigger
    The pupils dilate in the dark
    v.i.Intransitive VerbTo become wider, larger, or more open.
    The pupils of her eyes dilated with fear.
    v.t.Transitive VerbTo make something wider, larger, or more open.
    The doctor used drops to dilate her pupils.

    Video subtitles

    11 Things That Can Change Your Eye Color

    12:2411 Things That Can Change Your Eye Color
    • One study found that fear can cause the pupil to dilate more drastically than feelings of happiness or neutrality, which would temporarily make your eyes look a different color, as less of your iris is visible.

      One study found that fear can cause the pupil to dilate more drastically than feelings of happiness or neutrality, which would temporarily make your eyes look a different color, as less of your iris is visible.

    • One study found that fear can cause the pupil to dilate more drastically than feelings of happiness or neutrality, which would temporarily make your eyes look a different color as less of your iris is visible.

      One study found that fear can cause the pupil to dilate more drastically than feelings of happiness or neutrality, which would temporarily make your eyes look a different color as less of your iris is visible.

    B1

    Why Are Beach Holes So Deadly?

    16:11Why Are Beach Holes So Deadly?
    • At the same time, tiny movements within the slopes are strengthening the sand as it tries to dilate in volume.

      At the same time, tiny movements within the slopes are strengthening the sand as it tries to dilate in volume.

    • At the same time, tiny movements within the slopes are strengthening the sand as it tries to dilate in volume.

      At the same time, tiny movements within the slopes are strengthening the sand as it tries to dilate in volume.

    B1

    10 Subtle Signs Someone Feels Attracted To You

    04:5110 Subtle Signs Someone Feels Attracted To You
    • Studies have shown that when people become aroused, their pupils actually dilate.

      Studies have shown that when people become aroused, their pupils actually dilate.

    • Your eyes will dilate when you look at the gender you are most attracted to.

      Your eyes will dilate when you look at the gender you are most attracted to.

    B1

    Why Can't Dogs Eat Chocolate?

    03:22Why Can't Dogs Eat Chocolate?
    • Also like caffeine, theobromine makes our hearts pump faster, our blood vessels dilate,

      Also like caffeine, theobromine makes our hearts pump faster, our blood vessels dilate,

    • our blood vessels dilate, and some of our muscles

      our blood vessels dilate, and some of our muscles

    B1

    Coffee PROTECTS Your Brain! Science Behind The World's Most POPULAR Drug

    04:58Coffee PROTECTS Your Brain! Science Behind The World's Most POPULAR Drug
    • Your contracted blood vessels will dilate and blood pressure to drop, which can result in headaches.

      Your contracted blood vessels will dilate and blood pressure to drop, which can result in headaches.

    • Your contracted blood vessels will dilate, and your blood pressure will drop, and this can result in headaches.

      Your contracted blood vessels will dilate, and your blood pressure will drop, and this can result in headaches.

    B2

    眼科医だけど質問ある?| Tech Support | WIRED Japan

    13:30眼科医だけど質問ある?| Tech Support | WIRED Japan
    • What is the purpose of that other than giving me a migraine?" The reason we need to dilate your eyes is to take a look inside the back of your eye.

      What is the purpose of that other than giving me a migraine?" The reason we need to dilate your eyes is to take a look inside the back of your eye.

    • So by using the chemicals phenylephrine and tropicamide, they help to dilate that iris muscle so that I can actually see into the back of your eye.

      So by using the chemicals phenylephrine and tropicamide, they help to dilate that iris muscle so that I can actually see into the back of your eye.

    B2

    The Scientific Power of Music

    01:57The Scientific Power of Music
    • Music has the ability to create a state of arousal, causing pupils to dilate, blood pressure to rise, and the brain to fire in auditory, movement, and emotional regions.

      Music has the ability to create a state of arousal, causing pupils to dilate, blood pressure to rise, and the brain to fire in auditory, movement, and emotional regions.

    • causing pupils to dilate

      causing pupils to dilate

    B2

    7 Tips To Wake Up Without Coffee

    03:087 Tips To Wake Up Without Coffee
    • Music has the ability to create a state of arousal, causing pupils to dilate and blood pressure to increase.

      Music has the ability to create a state of arousal, causing pupils to dilate and blood pressure to increase.

    • to dilate and blood pressure to increase.

      to dilate and blood pressure to increase.

    B2

    Can Science Improve Your Sex Life?

    03:13Can Science Improve Your Sex Life?
    • When something triggers you to be "turned on", the brain and nervous system send signals to your pelvis, causing blood vessels to dilate.

      When something triggers you to be "turned on", the brain and nervous system send signals to your pelvis, causing blood vessels to dilate.

    • When something triggers you to be "turned on," the brain and nervous system send signals to your pelvis, causing blood vessels to dilate.

      When something triggers you to be "turned on," the brain and nervous system send signals to your pelvis, causing blood vessels to dilate.

    B2

    Why You Look Ugly When You Cry

    02:27Why You Look Ugly When You Cry
    • Tear fluid is produced with the help of blood, which comes through thickened gas when the blood vessels in your eyes dilate.

      Tear fluid is produced with the help of blood, which comes through thickened gas when the blood vessels in your eyes dilate.

    • of blood, which comes through thick and fast when the blood vessels in your eyes dilate.

      of blood, which comes through thick and fast when the blood vessels in your eyes dilate.

    B1