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)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "dilator" in a sentence
"The woman returns a second day so doctors either can insert more laminaria or another dilator, or remove the fetus and complete the abortion."
"On the first day, doctors insert a dilator, often bundles of dried seaweed called laminaria, to soften a woman's cervix."
"If a woman changes her mind after the dilator has been inserted and seeks to reverse the process, doctors can remove the laminaria."