from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A compass with a motorized gyroscope whose angular momentum interacts with the force produced by the earth's rotation to maintain a north-south orientation of the gyroscopic spin axis, thereby providing a stable directional reference.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A north-seeking form of gyroscope used as a directional reference in navigation.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a compass that does not depend on magnetism but uses a gyroscope instead
Sorry, no etymologies found.