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pelorus

American  
[puh-lawr-uhs, -lohr-] / pəˈlɔr əs, -ˈloʊr- /

noun

Navigation.
  • peloruses
    plural
  1. a device for measuring in degrees the relative bearings of observed objects.


pelorus British  
/ pɪˈlɔːrəs /

noun

  1. a sighting device used in conjunction with a magnetic compass or a gyrocompass for measuring the relative bearings of observed points

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of pelorus

1850–55; perhaps < Latin Pelōrus, now Faro in Sicily, a cape which requires skill in navigation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Zircon took sightings with the pelorus, then calculated his readings.

From The Pirates of Shan by Harold L. (Harold Leland) Goodwin

Now turn the lubber line of the pelorus to East.

From Lectures in Navigation by Ernest Gallaudet Draper

In other words, if the ship is heading NW, the pelorus must be set with the NW point on the lubber line when the bearing is taken of any object.

From Lectures in Navigation by Ernest Gallaudet Draper

Steady the ship on this heading until the shadow from the pelorus vane at the proper L.A.T. cuts the circumference of the pelorus dial at the proper magnetic bearing.

From Lectures in Navigation by Ernest Gallaudet Draper

Second, it must be remembered that the bearing of any object obtained from the pelorus is the bearing by compass.

From Lectures in Navigation by Ernest Gallaudet Draper

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