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TOEFL IELTS BNC: 19079 COCA: 18343

dilate

verb
/daɪˈleɪt/
/daɪˈleɪt/
[intransitive, transitive]
Verb Forms
present simple I / you / we / they dilate
/daɪˈleɪt/
/daɪˈleɪt/
he / she / it dilates
/daɪˈleɪts/
/daɪˈleɪts/
past simple dilated
/daɪˈleɪtɪd/
/daɪˈleɪtɪd/
past participle dilated
/daɪˈleɪtɪd/
/daɪˈleɪtɪd/
-ing form dilating
/daɪˈleɪtɪŋ/
/daɪˈleɪtɪŋ/
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  1. (of a part of the body身体部位) to become larger, wider or more open; to make a part of the body larger, wide or more open扩大；（使）膨胀，扩张
    • Her eyes dilated with fear.她吓得瞪大了眼睛。
    • dilated pupils/nostrils扩大了的瞳孔；张大了的鼻孔
    • dilate something Red wine can help to dilate blood vessels.红葡萄酒有助于扩张血管。
    • Horses sometimes dilate their nostrils when anxious.马有时会在焦虑时扩张鼻孔。
    • The patient’s pupils were dilated.病人的瞳孔放大了。
    opposite contract
    Oxford Collocations DictionaryDilate is used with these nouns as the subject:
    • blood vessel
    • eye
    • pupil
    • …
    See full entry
    Word Originlate Middle English: from Old French dilater, from Latin dilatare ‘spread out’, from di- ‘apart’ + latus ‘wide’.

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