pacemaker — English Dictionary

Noun

1. Specialized cells which stimulate the heart to beat.

   Examples

   natural pacemaker

   cardiac pacemaker

2. A medical implement that is used to stimulate a heart to beat by simulating the action of the natural pacemaker.

   Usage

   • broadly

   Examples

   artificial pacemaker

   High intensity EMF can have adverse impacts on the operation of implantable medical devices (IMDs) such as pacemakers and defibrillators.

3. One who sets the pace in a race, to guide the others.

   Usage

   • Uncommon

   Synonyms

   pacesetter

Noun

1. a leading instance in its field

   Synonyms

   pacesetter

   Broader terms

   exemplarexamplemodelgood example

   Examples

   the new policy will be a pacesetter in community relations

2. a specialized bit of heart tissue that controls the heartbeat

   Synonyms

   cardiac pacemakersinoatrial nodeSA node

   Broader terms

   cardiac muscleheart muscle

3. an implanted electronic device that takes over the function of the natural cardiac pacemaker

   Synonyms

   artificial pacemaker

   Broader terms

   electronic device

4. a horse used to set the pace in racing

   Synonyms

   pacerpacesetter

   Broader terms

   racehorserace horsebangtail