dilatator
/ˈdaɪləˌteɪtər/
noun
- A muscle that opens or expands a body part, such as the pupil of the eye.
- The iris contains a dilatator muscle that widens the pupil in dim light.
- Doctors studied the function of the dilatator in the human eye.
- When you are scared, your dilatator muscles make your pupils larger.
- A medical instrument used to widen a passage or opening in the body.
- The surgeon used a dilatator to gently open the narrow blood vessel.
- The doctor inserted a dilatator to expand the cervix before the procedure.
- A nasal dilatator can help some people breathe more easily during sleep.
Antonyms