noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   Specialized cells which stimulate the heart to beat.

   "natural pacemaker"

2. 2
   a horse used to set the pace in racing wordnet
3. 3
   A medical implement that is used to stimulate a heart to beat by simulating the action of the natural pacemaker. broadly

   "artificial pacemaker"

4. 4
   an implanted electronic device that takes over the function of the natural cardiac pacemaker wordnet
5. 5
   One who sets the pace in a race, to guide the others. uncommon

Show 2 more definitions

6. 6
   a specialized bit of heart tissue that controls the heartbeat wordnet
7. 7
   a leading instance in its field wordnet

Synonyms

All synonyms

pacesetterartificial pacemakerbellwethercardiac pacemakerchoirmasterconductor

Example

More examples

"My dad got a pacemaker recently."

Etymology

From pace + maker.

Related phrases

pacemaker currentpacemaker syndrome

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