a muscle or nerve that dilates or widens a body part
a drug that causes dilation
a surgical instrument that is used to dilate or distend an opening or an organ
同义词：dilater
dilator详细解释
di.la.tor n.（名词）A muscle that dilates a body part, such as a blood vessel or the pupil of the eye.扩张肌：扩张身体部分的肌肉，例如血管或眼睛的膜孔An instrument that dilates a body part, such as a cavity, canal, or orifice.扩张器：扩张身体部分的一种仪器，例如腔、管或是口
