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[prom-uh n-tawr-ee, -tohr-ee] /ˈprɒm ənˌtɔr i, -ˌtoʊr i/
noun, plural promontories.
a high point of land or rock projecting into the sea or other water beyond the line of coast; a headland.
a bluff, or part of a plateau, overlooking a lowland.
Anatomy. a prominent or protuberant part.
Origin of promontory
First recorded in 1540-50, promontory is from the Latin word prōmontorium, prōmunturium, of unclear derivation
Can be confused
cape, peninsula, promontory. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for promontory


/ˈprɒməntərɪ; -trɪ/
noun (pl) -ries
a high point of land, esp of rocky coast, that juts out into the sea
(anatomy) any of various projecting structures
Word Origin
C16: from Latin prōmunturium headland; related to prōminēre; see prominent
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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Word Origin and History for promontory

1540s, from Middle French promontoire (15c.) and directly from Medieval Latin promontorium, altered (by influence of Latin mons "mount, hill") from Latin promunturium "mountain ridge, headland," probably related to prominere "jut out" (see prominent).

Online Etymology Dictionary, © 2010 Douglas Harper
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promontory in Medicine

promontory prom·on·to·ry (prŏm'ən-tôr'ē)
A projecting part.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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promontory in Science
A high ridge of land or a rock cliff jutting out into a body of water.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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