outstroke

[ out-strohk ]

noun

1. a stroke in an outward direction.
2. (in an engine) the stroke during which the piston rod moves outward from the cylinder.

Word History and Origins

Origin of outstroke¹

First recorded in 1850–55; out- + stroke ¹

Example Sentences

Its cycle is: First outstroke, gas and air sucked into the cylinder; first instroke, gas and air compressed into space; second outstroke, impulse due to ignition; second instroke, discharge of exhausted gases.

From Project Gutenberg