from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A simple, essentially tubular jet engine, such as a ramjet.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A simple
jet engineconsisting essentially of a tubewith a means of delivering fueland ignitioninto the tube. The engine can only be started in a fast airflow. This type of engine is expected to be able to provide cruising speeds at Mach numbersof around 5 to 7 (5 to 7 times the speed of sound).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a simple type of jet engine; must be launched at high speed
from The American Heritage® Dictionary of the English Language, 4th Edition
[a(ero)– + th(erm)ody(namic) + d(uct).]
from Wiktionary, Creative Commons Attribution/Share-Alike License
Shortened form of aerothermodynamic duct.
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