dilatation
🇺🇸
/ˌdaɪləˈteɪʃn/
🇬🇧
/ˌdaɪləˈteɪʃn/
the act of stretching or expanding something
The doctor monitored the patient's pupil during the dilatation process.
醫生在擴張過程中監測患者的瞳孔。