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Definition of Pacemaker
1. Noun. A leading instance in its field. "The new policy will be a pacesetter in community relations"
2. Noun. A specialized bit of heart tissue that controls the heartbeat.
Exact synonyms: Cardiac Pacemaker, Sa Node, Sinoatrial Node
Generic synonyms: Cardiac Muscle, Heart Muscle
Generic synonyms: Cardiac Muscle, Heart Muscle
3. Noun. An implanted electronic device that takes over the function of the natural cardiac pacemaker.
4. Noun. A horse used to set the pace in racing.
Exact synonyms: Pacer, Pacesetter
Generic synonyms: Bangtail, Race Horse, Racehorse
Derivative terms: Pace
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.
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