from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An internal-combustion engine, formerly used in propeller-driven aircraft, with cylinders arranged radially around the crankshaft.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several internal combustion engines that have the cylinders arranged radially around a central crankshaft
from the GNU version of the Collaborative International Dictionary of English
- An engine, usually an internal-combustion engine of a certain type (the radial type) having several cylinders arranged radially like the spokes of a complete wheel. The semiradial engine has radiating cylinders on only one side of the crank shaft.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an internal-combustion engine having cylinders arranged radially around a central crankcase
Sorry, no etymologies found.
The P-47, nicknamed the Jug, with its big radial engine out front, did its job in World War II and the first time I strapped a Jug to me I thought it was the biggest thing I had ever seen.
A-19 became the “safe for solo” check flight and A-20 the first solo in the North American SNJ, the most famous of all World War II trainers, with retractable landing gear and a radial engine of 600 horsepower.