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 (ā′pĭ-sēz′, ăp′ĭ-)
A plural of apex.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈæpɪˌsiːz; ˈeɪ-)
a plural of apex
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈeɪ pɛks)

n., pl. a•pex•es, a•pi•ces (ˈeɪ pəˌsiz, ˈæp ə-)
1. the highest point; vertex; summit.
2. the tip or point: the apex of the tongue.
3. climax; peak: the apex of a career.
[1595–1605; < Latin]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
This comparative study was conducted on fifty human permanent, maxillary and mandibular single rooted anterior teeth with closed apices, which were planned for extraction.
The apex of Podophyllum peltatum can be described as a dome of medium size and exhibiting an internal structure not unlike that of other angiosperm apices.
We found no literature on the rates of elongation and widening of the apex dome under elevated [CO.sub.2] concentrations, or on the relationship between the rates of primordium initiation and the size of inflorescence apices.