DILATE Meaning of DILATE in English verbDilate is used with these nouns as the subject: ↑ blood vessel , ↑ eye , ↑ pupilDilate is used with these nouns as the object: ↑ artery , ↑ blood vessel , ↑ pupil Oxford Collocations English Dictionary. Оксфордский английский словарь словосочетаний . 2012