Dilator or dilatator is a medical term with a number of uses, including:
A surgical instrument or medical implement used to induce dilation, that is, to expand an opening or passage such as the cervix (see cervical dilator), urethra, esophagus, or vaginal introitus.A pharmacological treatment used to induce dilation, such as cervical dilation, vasodilation, or pupillary dilation.A muscle which causes dilation of a part, for example, the iris dilator muscle or the dilator naris muscle.
