dilate

di·late

verb \dī-ˈlāt, ˈdī-ˌ\

di·lat·eddi·lat·ing

Definition of DILATE

transitive verb

: to enlarge, stretch, or cause to expand <dilate his pupils with atropine> <the drug dilates peripheral arteries>

intransitive verb

: to become expanded or swollen <the cervix was dilating> <the pupils dilated>