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Definition of protractor - 4 dictionary results
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pro⋅trac⋅tor

  [proh-trak-ter, pruh-]
Use protractor in a Sentence
–noun
1. a person or thing that protracts.
2. (in surveying, mathematics, etc.) an instrument having a graduated arc for plotting or measuring angles.
3. Anatomy. a muscle that causes a part to protrude.
Origin:
1605–15; < ML; see protract, -tor
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To protractor
Arthur Gaebel Products
Rulers, Line Gauges, Magnifiers Computer & Desktop Publishing Tools
www.gwjcompany.com
Compass
Ramsey Outdoor: Specializing in Outdoor Adventure Gear. Free Ship.
www.RamseyOutdoor.com
pro·trac·tor   (prō-trāk'tər, prə-)   
n.  

  1. A semicircular instrument for measuring and constructing angles.

  2. An adjustable pattern used by tailors.

  3. Anatomy A muscle that extends a limb or other part.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: pro·trac·tor
Pronunciation: -t&r
Function: noun
: a muscle that extends a part —compare RETRACTOR b
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

protractor pro·trac·tor (prō-trāk'tər, prə-)
n.
A muscle that extends a limb or other 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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