JATO engine[′jā·dō ‚en·jən]
Derived from jet-assisted-takeoff engine.
An auxiliary jet-producing unit or units, usually rockets, for additional thrust.
A JATO bottle or unit; the complete auxiliary power system used for assisted takeoff.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.