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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 Goodwin, Harold L. (Harold Leland)

If, now, the compass were correct it would agree with the pelorus in showing the ship's head to be North.

From Lectures in Navigation by Draper, Ernest Gallaudet

"Better use the pelorus and be careful about West Chop's bearing after we pass her, Mr. Bangs," Captain Mayo warned his first mate.

From Blow The Man Down A Romance Of The Coast - 1916 by Day, Holman

Now turn the lubber line of the pelorus to East.

From Lectures in Navigation by Draper, Ernest Gallaudet

Starboard or port your helm until at the time calculated the reflection of the sight vane on the pelorus dial cuts on the proper magnetic bearing.

From Lectures in Navigation by Draper, Ernest Gallaudet

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