ap-

Dictionary.com Unabridged

ap-

2
variant of apo- before a vowel or h: aphelion.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
ap-
 
prefix
a variant of apo- : aphelion

apo- or ap-
 
prefix
1.  away from; off: apogee
2.  indicating separation of: apocarpous
3.  indicating a lack or absence of: apogamy
4.  indicating derivation from or relationship to: apomorphine
 
[from Greek apo away, off]
 
ap- or ap-
 
prefix
 
[from Greek apo away, off]

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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Etymonline
Word Origin & History

ap-
patronymic prefix in Welsh names, earlier map "son," cognate with Gaelic mac. Since 17c. merged into surnames (Ap Rhys = Price, Ap Evan = Bevan, etc.).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

ap- 1
pref.
Variant of ad-.

ap- 2
pref.
Variant of apo-.

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