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fulcrum

[foo l-kruh m, fuhl-] /ˈfʊl krəm, ˈfʌl-/
noun, plural fulcrums, fulcra
[foo l-kruh, fuhl-] /ˈfʊl krə, ˈfʌl-/ (Show IPA)
1.
the support, or point of rest, on which a lever turns in moving a body.
2.
any prop or support.
3.
Zoology. any of various structures in an animal serving as a hinge or support.
verb (used with object)
4.
to fit with a fulcrum; put a fulcrum on.
Origin
1665-1675
1665-75; < Latin: back-support of a couch, apparently for fulctrum, equivalent to fulc(īre) to hold up, support + -trum noun suffix of instrument
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for fulcra

fulcrum

/ˈfʊlkrəm; ˈfʌl-/
noun (pl) -crums, -cra (-krə)
1.
the pivot about which a lever turns
2.
something that supports or sustains; prop
3.
a spinelike scale occurring in rows along the anterior edge of the fins in primitive bony fishes such as the sturgeon
Word Origin
C17: from Latin: foot of a couch, bedpost, from fulcire to prop up
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 fulcra

fulcrum

n.

1670s, "a prop, a support" (on which a lever turns), from Latin fulcrum "bedpost," from fulcire "to prop up, support" (see balk).

Online Etymology Dictionary, © 2010 Douglas Harper
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fulcra in Medicine

fulcrum ful·crum (ful'krəm, fŭl'-)
n. pl. ful·crums or ful·cra (-krə)

  1. The point or support on which a lever pivots.

  2. An anatomical structure that acts as a hinge or a point of support.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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fulcra in Science
fulcrum
  (fl'krəm)   

The point or support on which a lever turns. The position of the fulcrum, relative to the positions of the load and effort, determines the type of lever.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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fulcra in Culture
fulcrum [(fool-kruhm, ful-kruhm)]

The point on which a lever is balanced when a force is exerted.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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