Noun
an internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders
Source: WordNetIndustrial man --a sentient reciprocating engine having a fluctuating output, coupled to an iron wheel revolving with uniform velocity. And then we wonder why this should be the golden age of revolution and mental derangement. Aldous Huxley
A Wankel rotary engine has stronger flows of air-fuel mixture and a longer operating cycle than a reciprocating engine, realizing concomitantly thorough mixing of hydrogen and air. Source: Internet
A theoretical study has shown that it is possible and practical to build a reciprocating engine that is composed of a single oscillating atom. Source: Internet
General Motors seemed to have concluded the Wankel engine was slightly more expensive to build than an equivalent reciprocating engine. Source: Internet
Indicated horsepower (ihp) Indicated horsepower (ihp) is the theoretical power of a reciprocating engine if it is completely frictionless in converting the expanding gas energy (piston pressure × displacement) in the cylinders. Source: Internet
One notable reciprocating engine from the WWII Era was the 28-cylinder, convert Pratt & Whitney R-4360 "Wasp Major" radial engine. Source: Internet