PACEMAKER

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does pacemaker mean? 

• PACEMAKER (noun)
  The noun PACEMAKER has 4 senses:

1. a leading instance in its field

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

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

4. a horse used to set the pace in racing

  Familiarity information: PACEMAKER used as a noun is uncommon.

 Dictionary entry details 

• PACEMAKER (noun)

Sense 1

Meaning:

A leading instance in its field

Classified under:

Nouns denoting cognitive processes and contents

Synonyms:

pacemaker; pacesetter

Context example:

the new policy will be a pacesetter in community relations

Hypernyms ("pacemaker" is a kind of...):

example; exemplar; good example; model (something to be imitated)

Sense 2

Meaning:

A specialized bit of heart tissue that controls the heartbeat

Classified under:

Nouns denoting body parts

Synonyms:

cardiac pacemaker; pacemaker; SA node; sinoatrial node

Hypernyms ("pacemaker" is a kind of...):

cardiac muscle; heart muscle (the muscle tissue of the heart; adapted to continued rhythmic contraction)

Sense 3

Meaning:

An implanted electronic device that takes over the function of the natural cardiac pacemaker

Classified under:

Nouns denoting man-made objects

Synonyms:

artificial pacemaker; pacemaker

Hypernyms ("pacemaker" is a kind of...):

electronic device (a device that accomplishes its purpose electronically)

Sense 4

Meaning:

A horse used to set the pace in racing

Classified under:

Nouns denoting animals

Synonyms:

pacemaker; pacer; pacesetter

Hypernyms ("pacemaker" is a kind of...):

bangtail; race horse; racehorse (a horse bred for racing)

 Context examples 

These cells are essential for normal gastrointestinal motility by functioning as the pacemaker cells in gastrointestinal muscles.

(Interstitial Cell of Cajal, NCI Thesaurus)

They are especially useful in devices like pacemakers because of their long life.

(Lithium Iodide Battery Device Component, NCI Thesaurus)

A pacemaker helps control abnormal heart rhythms.

(Pacemakers and Implantable Defibrillators, NIH)

For example, a pacemaker helps with certain heart complications.

(Chagas Disease, Centers for Disease Control and Prevention)

Failure to pace manifests as absence of pacemaker stimulation artifacts on electrocardiographic recordings despite rates below pacemaker programmed rate.

(Failure of Cardiac Pacemaker to Pace, NCI Thesaurus)

An electrocardiographic finding in which the atrial rhythm is controlled by an electrical impulse from an artificial cardiac pacemaker.

(Paced Atrial Rhythm, NCI Thesaurus/CDISC)

An electrocardiographic finding in which the cardiac rhythm is controlled by an electrical impulse from an artificial cardiac pacemaker.

(Paced Rhythm, NCI Thesaurus/CDISC)

An electrocardiographic finding in which both the atrial and ventricular rhythm are controlled by an electrical impulse from an artificial cardiac pacemaker.

(Paced Atrial And Ventricular Rhythm, NCI Thesaurus/CDISC)

Called the Ineos 1:59 Challenge, it featured 42 pacemakers — supporting runners.

(Eliud Kipchoge of Kenya runs marathon under two hours, Wikinews)

The wire which connects a pacemaker or defibrillator to the atrial tissue.

(Atrial Lead, NCI Thesaurus)