名詞 dilator:

1. a muscle or nerve that dilates or widens a body part
2. a drug that causes dilation
3. a surgical instrument that is used to dilate or distend an opening or an organ
   同義詞：dilater

di.la.tor

n.（名詞）
A muscle that dilates a body part, such as a blood vessel or the pupil of the eye.
擴(kuò)張?。簲U(kuò)張身體部分的肌肉，例如血管或眼睛的膜孔
An instrument that dilates a body part, such as a cavity, canal, or orifice.
擴(kuò)張器：擴(kuò)張身體部分的一種儀器，例如腔、管或是口