Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Requiring four strokes of the piston for a cycle: a four-cycle internal-combustion engine.

from the GNU version of the Collaborative International Dictionary of English

  • n. A four-stroke cycle, as the Otto cycle, for an internal-combustion engine.

from The Century Dictionary and Cyclopedia

  • n. Same as four-phase cycle (which see, under internal-combustion motor).

Etymologies

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