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instroke

[ in-strohk ]
/ ˈɪnˌstroʊk /
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noun
a stroke traveling in an inward direction.
(in an engine) the stroke during which the piston moves into the cylinder.
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Origin of instroke

First recorded in 1885–90; in + stroke1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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