four-stroke

English

Adjective

four-stroke (not comparable)

1. Of or relating to a design of internal combustion engine in which the pistons perform four strokes per engine cycle: intake, compression, power, exhaust.

   This motorbike has a four-stroke engine.

   • 1958 June, “Main-Line Diesel-Electric Locomotives for the Eastern Region”, in Railway Magazine, page 393:

     This is a 16-cylinder unit with the cylinders arranged in vee formation, operating on the four-stroke cycle and pressure-charged by four Napier exhaust gas-driven turbo-chargers.

Derived terms

• four-stroke engine

Related terms

• two-stroke

Noun

four-stroke (plural four-strokes)

1. A four-stroke engine.
2. A vehicle or machine powered by a four-stroke engine.