dilate
di|late /daɪl'eɪt/ (dilates dilating dilated)
[VERB] V, V n
When things such as blood vessels or the pupils of your eyes dilate or when something dilates them, they become wider or bigger.
At night, the pupils dilate to allow in more light...
Exercise dilates blood vessels on the surface of the brain.
= enlarge
● dilated [ADJ]
His eyes seemed slightly dilated.
[VERB] V, V n
When things such as blood vessels or the pupils of your eyes dilate or when something dilates them, they become wider or bigger.
At night, the pupils dilate to allow in more light...
Exercise dilates blood vessels on the surface of the brain.
= enlarge
● dilated [ADJ]
His eyes seemed slightly dilated.