antiarrhythmic

[ an-tee-uh-rith -mik, -uh-rith-, an-tahy- ]
/ ˌæn ti əˈrɪð mɪk, -əˈrɪθ-, ˌæn taɪ- /
Pharmacology

adjective

of or relating to any substance that prevents, inhibits, or alleviates heartbeat irregularities.

noun

any such substance, as lidocaine.

QUIZZES

CHALLENGE YOURSELF WITH THESE WORDS FROM "LITTLE WOMEN"

"Little Women" may be a classic, but that doesn't mean we all know the meanings of the vocab words from the book. Can you define these words correctly and make Jo proud?
Question 1 of 10
earnest
full seriousness, as of intention or purpose.
a feeling of dread, anxiety, or anguish.
urgent character; imperativeness; insistence; importunateness.
TAKE THE QUIZ TO FIND OUT

Origin of antiarrhythmic

First recorded in 1950–55; anti- + arrhythmic

Words nearby antiarrhythmic

antiantibody, antianxiety, antianxiety agent, antianxiety drug, antiar, antiarrhythmic, antiart, antiarthritic, antiatom, antiauxin, antibacchius
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for antiarrhythmic

antiarrhythmic
[ ăn′tē-ə-rĭð′mĭk, ăn′tī- ]

adj.

Preventing or alleviating irregularities in the force or rhythm of the heart.

n.

An antiarrythmic drug.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.