dilatation
/ˌdaɪləˈteɪʃən/
noun
- The process of becoming wider or more open, or the state of being wider or more open.
- The dilatation of blood vessels helps regulate body temperature.
- The dilatation of the pupil in dim light lets in more light.
- Doctors monitored the dilatation of her cervix during labor.
Antonyms