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peloruses

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pe⋅lo⋅rus

  [puh-lawr-uhs, -lohr-]
Use peloruses in a Sentence
–noun, plural -rus⋅es. Navigation.
a device for measuring in degrees the relative bearings of observed objects.
Also called dumb compass.

Origin:
1850–55; perh. < L Pelōrus, now Faro in Sicily, a cape which requires skill in navigation
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To peloruses
pe·lo·rus   (pə-lôr'əs, -lōr'-)   
n.   pl. pe·lo·rus·es
A fixed compass card on which bearings relative to a ship's heading are taken.

[Origin unknown.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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