va·​so·​di·​la·​tor | \ ˌvā-zō-dī-ˈlā-tər How to pronounce vasodilator (audio) , -ˈdī-ˌlā- How to pronounce vasodilator (audio) \

Definition of vasodilator

: an agent (such as a parasympathetic nerve fiber or a drug) that induces or initiates vasodilation

Examples of vasodilator in a Sentence

Recent Examples on the Web

Instead, a growing pile of studies suggested that CGRP was not just a vasodilator, but a previously unknown, pain-signaling neurotransmitter. Emily Underwood, Science | AAAS, "Will antibodies finally put an end to migraines?," 18 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'vasodilator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of vasodilator

1881, in the meaning defined above

History and Etymology for vasodilator

vaso- + dilator, after French vaso-dilateur

Keep scrolling for more

Learn More about vasodilator

Statistics for vasodilator

Look-up Popularity

Time Traveler for vasodilator

The first known use of vasodilator was in 1881

See more words from the same year

Keep scrolling for more

More Definitions for vasodilator


va·​so·​di·​la·​tor | \ ˌvā-zō-ˈdī-ˌlāt-ər How to pronounce vasodilator (audio) \

Medical Definition of vasodilator

 (Entry 1 of 2)

: an agent (as a parasympathetic nerve fiber or a drug) that induces or initiates vasodilation


variants: also vasodilatory \ -​ˈdil-​ə-​ˌtōr-​ē, -​ˈdī-​lə-​, -​ˌtȯr-​ How to pronounce vasodilatory (audio) \

Medical Definition of vasodilator (Entry 2 of 2)

: relating to, inducing, or initiating vasodilation a drug with a vasodilator effect

More from Merriam-Webster on vasodilator Encyclopedia article about vasodilator

Comments on vasodilator

What made you want to look up vasodilator? Please tell us where you read or heard it (including the quote, if possible).


involving a confidence or trust

Get Word of the Day daily email!

Test Your Vocabulary

Word Puzzles

  • alt 57589b2b4c6a3
  • Which answer pairs best with each of the following words? living, estate, club, music, road, mile
Spell It

Can you spell these 10 commonly misspelled words?

Add Diction

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!