1. [ noun ] (pharmacology) a drug that causes dilation
Related terms: drug vasodilator dilate
2. [ noun ] a muscle or nerve that dilates or widens a body part
Related terms: body_part dilate
3. [ noun ] (medicine,surgery) a surgical instrument that is used to dilate or distend an opening or an organ
Synonyms: dilater
Related terms: surgical_instrument dilate
Similar spelling:   dilatory