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pelorus

[puh-lawr-uh s, -lohr-] /pəˈlɔr əs, -ˈloʊr-/
noun, plural peloruses. Navigation
1.
a device for measuring in degrees the relative bearings of observed objects.
Also called dumb compass.
Origin of pelorus
1850-1855
1850-55; perhaps < Latin Pelōrus, now Faro in Sicily, a cape which requires skill in navigation
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for pelorus
Historical Examples
  • After a long time the pelorus got alongside and men quickly fastened the huge buoy to the ship.

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

    Lectures in Navigation Ernest Gallaudet Draper
  • The center line of the pelorus should also be directly over the keel line of the ship.

    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 was dug out of the mud, and once more got afloat towards the middle of February following.

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

    Creatures of the Abyss Murray Leinster
  • In taking a bearing by pelorus, two facts must be kept in mind.

    Lectures in Navigation Ernest Gallaudet Draper
  • And maybe you should tell them about the pelorus and the bathyscaphe.

    Creatures of the Abyss Murray Leinster
  • Zircon took sightings with the pelorus, then calculated his readings.

    The Pirates of Shan Harold Leland Goodwin
  • One of the pelorus men tells me it's an immature specimen, too.

    Creatures of the Abyss Murray Leinster
British Dictionary definitions for pelorus

pelorus

/pɪˈlɔːrəs/
noun (pl) -ruses
1.
a sighting device used in conjunction with a magnetic compass or a gyrocompass for measuring the relative bearings of observed points
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
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