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dilate

verb

Pronunciation: daɪˈleɪt

Expand or widen to a larger size.

The doctor used special drops to dilate my pupils before the eye exam.
The blood vessels in the skin dilate to help release body heat during exercise.
The opening of the cervix must dilate significantly during the final stages of labor.

Words with a similar meaning to dilate:

Words with the opposite meaning to dilate: