Pacemaker

noun

/ˈpeɪsˌmeɪkəɹ/

Word Frequency: 1.5

Definitions

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

2.nounA set of nerves which stimulate the heart to beat.

3.noun(hence) A medical implement that is used to stimulate a heart to beat by simulating the action of the natural pacemaker.

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