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/  | 
- (of a part of the body) to become larger, wider or more open; to make a part of the body larger, wide or more open
- Her eyes dilated with fear.
 - dilated pupils/nostrils
 - dilate something Red wine can help to dilate blood vessels.
 - Horses sometimes dilate their nostrils when anxious.
 - The patient’s pupils were dilated.
 
Oxford Collocations DictionaryDilate is used with these nouns as the subject:- blood vessel
 - eye
 - pupil
 - …
 
Word Originlate Middle English: from Old French dilater, from Latin dilatare ‘spread out’, from di- ‘apart’ + latus ‘wide’.