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erector

[ih-rek-ter] /ɪˈrɛk tər/
noun
1.
Also, erecter. a person or thing that erects.
2.
Anatomy. a muscle that erects the body or one of its parts.
Origin
1530-1540
1530-40; erect + -or2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for erector

erector

/ɪˈrɛktə/
noun
1.
(anatomy) any muscle that raises a part or makes it erect
2.
a person or thing that erects
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 erector
n.

1530s, agent noun in Latin form from erect (v.).

Online Etymology Dictionary, © 2010 Douglas Harper
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erector in Medicine

erector e·rec·tor (ĭ-rěk'tər)
n.
A muscle that makes a body part erect. Also called arrector.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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