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.
The thing about a gyrocompass is that you can use it differently than that though.
About fifteen minutes into the flight we had a gyrocompass failure, and we lost attitude control.
The gyrocompass will continue to orient on that star making a full revolution once with each complete rotation of the planet, the Doctor explained.
Then take the gyrocompass and attach it to the dimensional cannon and allow it to program the device.
Then he injected it into the fluid that needed to go into the center of the gyrocompass.
A normal gyrocompass finds true north, not magnetic north, by using a very quickly rotating wheel and friction forces in order to use the turn of the Earth in its orienting process.
The fifth submarine, beset by a broken gyrocompass, did not set out until 05.30 and would spend most of the day travelling in circles.
At 10:26 P.M. Sunday night, the gyrocompass broke again.
Both the radar and gyrocompass were fried and the officers distrusted the magnetic compass.
Lucas found that neither the gyrocompass nor the rudder angle indicator worked.