an-

an-

1
a prefix occurring before stems beginning with a vowel or h in loanwords from Greek, where it means “not,” “without,” “lacking” (anarchy; anecdote ); used in the formation of compound words: anelectric.
Also, before a consonant, a-.


Origin:
< Greek. See a-6, in-3, un-1

Dictionary.com Unabridged

an-

2
variant of ad- before n: announce.

an-

3
variant of ana- before a vowel: anion.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
a- or (before a vowel) an-1
 
prefix
not; without; opposite to: atonal; asocial
 
[from Greek a-, an- not, without]
 
an- or (before a vowel) an-1
 
prefix
 
[from Greek a-, an- not, without]

an- or (before a consonant) a-
 
prefix
not; without: anaphrodisiac
 
[from Greek]
 
a- or (before a consonant) a-
 
prefix
 
[from Greek]

ana- or (before a vowel) an-
 
prefix
1.  up; upwards: anadromous
2.  again: anagram
3.  back; backwards: anatropous
 
[from Greek ana]
 
an- or (before a vowel) an-
 
prefix
 
[from Greek ana]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

an-
privative prefix, from Gk., "not, without," related to ne- and cognate with Skt. an-, L. in-, Goth., O.E. un- (see un-).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

an- pref.
Variant of a-.

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