pacemaker

noun
/ˈpeɪsˌmeɪkəɹ/

Specialized cells which stimulate the heart to beat.

Other meanings

A medical implement that is used to stimulate a heart to beat by simulating the action of the natural pacemaker.
One who sets the pace in a race, to guide the others.

Related words

biopacemaker
neuropacemaker
pacemakerlike
pacemaker current
pacemaker syndrome

Example sentences

“My dad got a pacemaker recently.”
Tatoeba · ddnktr · CC0

Where this comes from

This definition is adapted from “pacemaker” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.