pulsator

noun
pul·​sa·​tor | \ ˈpəl-ˌsā-tər How to pronounce pulsator (audio) , ˌpəl-ˈsā-\

Definition of pulsator

: something that beats or throbs in working

First Known Use of pulsator

1890, in the meaning defined above

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The first known use of pulsator was in 1890

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