noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   Any nerve or muscle that causes part of the body to dilate.
2. 2
   a surgical instrument that is used to dilate or distend an opening or an organ wordnet
3. 3
   Any drug that causes such dilation.
4. 4
   a drug that causes dilation wordnet
5. 5
   An instrument used to dilate an orifice or cavity.

Show 1 more definition

6. 6
   a muscle or nerve that dilates or widens a body part wordnet

Synonyms

All synonyms

dilaterdilatatordilatator

Etymology

From dilate + -or.

Related phrases

iris dilator muscle

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.