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pelorus

[puh-lawr-uh s, -lohr-]
noun, plural pe·lo·rus·es. Navigation.
  1. a device for measuring in degrees the relative bearings of observed objects.
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Origin of pelorus

1850–55; perhaps < Latin Pelōrus, now Faro in Sicily, a cape which requires skill in navigation
Also called dumb compass.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for pelorus

Historical Examples

  • In taking a bearing by pelorus, two facts must be kept in mind.

    Lectures in Navigation

    Ernest Gallaudet Draper

  • These bearings will be secured in the best way by the use of your pelorus.

    Lectures in Navigation

    Ernest Gallaudet Draper

  • He became famous and popular, and was known as "Pelorus Jack."

    More Science From an Easy Chair

    Sir E. Ray (Edwin Ray) Lankester

  • "The Pelorus will send a boat as soon as we've anchored," he told them.

    Creatures of the Abyss

    Murray Leinster

  • And maybe you should tell them about the Pelorus and the bathyscaphe.

    Creatures of the Abyss

    Murray Leinster


British Dictionary definitions for pelorus

pelorus

noun plural -ruses
  1. a sighting device used in conjunction with a magnetic compass or a gyrocompass for measuring the relative bearings of observed points
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Word Origin

of uncertain origin, perhaps from Latin Pelōrus a dangerous Sicilian promontory
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012