Definition of Pacemaker

1. Noun. A leading instance in its field. "The new policy will be a pacesetter in community relations"

Exact synonyms: Pacesetter
Generic synonyms: Example, Exemplar, Good Example, Model

2. Noun. A specialized bit of heart tissue that controls the heartbeat.

3. Noun. An implanted electronic device that takes over the function of the natural cardiac pacemaker.
Exact synonyms: Artificial Pacemaker
Generic synonyms: Electronic Device

4. Noun. A horse used to set the pace in racing.
Exact synonyms: Pacer, Pacesetter
Generic synonyms: Bangtail, Race Horse, Racehorse
Derivative terms: Pace

Definition of Pacemaker

1. Noun. One who sets the pace in a race, to guide the others. ¹

2. Noun. (anatomy) A set of nerves which stimulate the heart to beat. ¹

3. Noun. (context: hence medicine) A medical implement that is used to stimulate a heart to beat by simulating the action of the natural pacemaker. ¹

¹ Source: wiktionary.com

Definition of Pacemaker

1. [n -S]

Medical Definition of Pacemaker

1. 1. An object or substance that influences the rate at which a certain phenomenon occurs, often used alone to indicate the natural cardiac pacemaker or an artificial cardiac pacemaker. 2. A substance whose rate of reaction sets the pace for a series of interrelated reactions. (24 Mar 1998)

Lexicographical Neighbors of Pacemaker

pace-setter
pace-setters
pace car
pace cars
pace egg
pace eggs
pace lap
pace notes
pace setter
pace setters
paced
pacefollower
paceite
paceline
pacelines
pacemaker
pacemaker failure
pacemaker output
pacemaker potential
pacemaker sensitivity
pacemaker syndrome
pacemakerlike
pacemakers
pacemaking
pacemakings
paceman
pacemen
pacer
pacers
paces

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