/fawr"suy'keuhl, fohr"-/ , adj.
noting or pertaining to an internal-combustion engine in which a complete cycle in each cylinder requires four strokes, one to draw in air or an air-fuel mixture, one to compress it, one to ignite it and do work, and one to scavenge the cylinder.
Also, four-stroke . Cf. two-cycle .
[ 1905-10 ]