使擴張的人,擴張器,擴張筋
Dilator \Di*lat"or\, n. [See {Dilate}.] 1. One who, or that which, widens or expands. 2. (Anat.) A muscle that dilates any part. 3. (Med.) An instrument for expanding a part; as, a urethral dilator.
dilator n 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 [syn: {dilater}]