noun. A muscle that dilates a body part, such as a blood vessel or the pupil of the eye.

noun. An instrument that dilates a body part, such as a cavity, canal, or orifice.

noun. One who or that which widens or expands; specifically, a muscle that dilates; a dilatator.

noun. A surgical instrument, of various forms, used for dilating a wound, a canal, or an external opening of the body.

noun. One who, or that which, widens or expands.

noun. A muscle that dilates any part.

noun. An instrument for expanding a part.

noun. Any nerve or muscle that causes part of the body to dilate

noun. Any drug that causes such dilation

noun. An instrument used to dilate an orifice or cavity

noun. a muscle or nerve that dilates or widens a body part

noun. a surgical instrument that is used to dilate or distend an opening or an organ

noun. a drug that causes dilation

"On the first day, doctors insert a dilator, often bundles of dried seaweed called laminaria, to soften a woman's cervix."

body part  surgical instrument  

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