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noun
a plural of apex.
Dictionary.com Unabridged
noun, plural a·pex·es, a·pi·ces 
[ey-puh-seez, ap-uh-] .
[ey-puh-seez, ap-uh-] . 1.
the tip, point, or vertex; summit.
2.
climax; peak; acme: His election to the presidency was the apex of his career.
3.
Astronomy. solar apex.
Origin:
1595–1605; < Latin
1595–1605; < Latin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To apices
Collins
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
apex
c.1600, from L. apex "summit, peak, tip;" probably related to apere "to fasten, fix," hence "the tip of anything" (one of the meanings in L. was "small rod at the top of the flamen's cap"). Proper plural is apices.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
apex a·pex (ā'pěks)
n. pl. a·pex·es or a·pi·ces (ā'pĭ-sēz', āp'ĭ-)
The pointed end of a conical or pyramidal structure.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
| apex (ā'pěks) Pronunciation Key
The highest point, especially the vertex of a triangle, cone, or pyramid. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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