instroke
/ˈɪnstroʊk/
noun
- In an engine, the movement of a piston inward or toward the cylinder head, usually the compression or intake stroke.
- During the instroke, the piston moves upward in the cylinder.
- The mechanic explained that the instroke compresses the fuel-air mixture before ignition.
- Engine timing must be adjusted so that the instroke happens at the right moment.
Antonyms