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n. pl. After·rus·es
A fixed compass card on which bearings relative to a ship's heading are taken.

[Probably named around 1854 by the applicants for the British patent on the device, after Latin Pelōrus and Greek Pelōros, the name of a skilled pilot whom Hannibal is said to have put to death in Messina for treachery (although Hannibal later realized the pilot's faithfulness and erected a monument to him there), probably a legendary name derived from Greek Pelōros, Pelōrias, ancient names of Messina, probably from pelōros, prodigious, monstrous (perhaps from the dangerous whirlpool, winds, and currents of the Strait of Messina ); see peloria.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -ruses
(Navigation) a sighting device used in conjunction with a magnetic compass or a gyrocompass for measuring the relative bearings of observed points
[of uncertain origin, perhaps from Latin Pelōrus a dangerous Sicilian promontory]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(pəˈlɔr əs, -ˈloʊr-)

n., pl. -rus•es.
a device for measuring in degrees the relative bearings of observed objects.
[1850–55; perhaps < Latin Pelōrus, now Faro in Sicily, a cape which requires skill in navigation]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in classic literature ?
Then with expanded wings he stears his flight Aloft, incumbent on the dusky Air That felt unusual weight, till on dry Land He lights, if it were Land that ever burn'd With solid, as the Lake with liquid fire; And such appear'd in hue, as when the force Of subterranean wind transports a Hill Torn from PELORUS, or the shatter'd side Of thundring AETNA, whose combustible And fewel'd entrals thence conceiving Fire, Sublim'd with Mineral fury, aid the Winds, And leave a singed bottom all involv'd With stench and smoak: Such resting found the sole Of unblest feet.
Milton Sublette was the Pelorus of this adventurous bark; being somewhat experienced in this wild kind of navigation.
While overseas, he founded Pelorus International Pty Ltd with head office in Melbourne, a highly visible and leading provider of direct and channel management planning and advisory services to the high technology sector across Asia Pacific.
Some of the key competitors covered in the fibre optic test equipment market report are EXFO Inc., Anritsu, Fluke Corporation, VIAVI Solutions Inc., VeEX Inc., Yokogawa Corporation, Kingfisher International, Anixter International, National Instruments, AFL and Pelorus. Enquire about this Report @ About Market Research Reports Search Engine (MRRSE) Market Research Reports Search Engine (MRRSE) is an industry-leading database of Market Research Reports .
Oceanco has created Esquel in collaboration with Timur Bozca Design, stylist Gina Brennan, Lateral Naval Architects and Engineering, and Pelorus -- a leading experiential and yacht expedition travel company.
(29) D'Arcy Cresswell, The Forest (Auckland: Pelorus, 1952), p.
On 4 days of the campaign, the New Zealand Defence Technology Agency (DTA) operated a kitesonde at sea in the vicinity of Pelorus Island, measuring high-vertical-resolution atmospheric data near the sea surface.
(15) For examples of Calasiris' emphasis on Charicleia's erotic power, see 3,4: her unsurpassable beauty is described as she emerges from the temple of Artemis to take part in the festival where she and Theagenes first set eyes on each other; also, 5,31, where Pelorus views her dressed ready for marriage.
Oklahoma-based crude oil logistics company NGL Energy Partners LP (NYSE: NGL) has acquired a crude oil and condensate marine terminal project and related assets from Texas-based Pelorus Terminal: Point Comfort, LLC, the company said.
Visit the Marlborough Sounds on the Pelorus Mail Boat with a Scotsman captain recounting the area's history.