an

1 [uhn; when stressed an]
indefinite article
the form of a before an initial vowel sound (an arch; an honor ) and sometimes, especially in British English, before an initial unstressed syllable beginning with a silent or weakly pronounced h : an historian.

Origin:
before 950; Middle English; Old English ān one in a weakened sense


See a1.
Dictionary.com Unabridged

an

2 [uhn; when stressed an]
conjunction
1.
Pronunciation spelling. and.
2.
Archaic. if.
Also, an', 'n, 'n'.


Origin:
1125–75; Middle English, unstressed phonetic variant of and

An

[ahn]
noun
the Sumerian god of heaven: the counterpart of the Akkadian Anu.

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

an-

2
variant of ad- before n: announce.

an-

3
variant of ana- before a vowel: anion.

-an

a suffix occurring originally in adjectives borrowed from Latin, formed from nouns denoting places (Roman; urban ) or persons (Augustan ), and now productively forming English adjectives by extension of the Latin pattern. Attached to geographic names, it denotes provenance or membership (American; Chicagoan; Tibetan ), the latter sense now extended to membership in social classes, religious denominations, etc., in adjectives formed from various kinds of noun bases (Episcopalian; pedestrian; Puritan; Republican ) and membership in zoological taxa (acanthocephalan; crustacean ). Attached to personal names, it has the additional senses “contemporary with” (Elizabethan; Jacobean ) or “proponent of” (Hegelian; Freudian ) the person specified by the noun base. The suffix -an, and its variant -ian also occurs in a set of personal nouns, mainly loanwords from French, denoting one who engages in, practices, or works with the referent of the base noun (comedian; grammarian; historian; theologian ); this usage is especially productive with nouns ending in -ic, (electrician; logician; technician ). See -ian for relative distribution with that suffix.
Compare -enne, -ean, -arian, -ician.


Origin:
Middle English < Latin -ānus, -āna, -ānum; in some words replacing -ain, -en < Old French < Latin

AN

Also, A.-N.

An

Symbol, Chemistry.

an.

in the year.

Origin:
< Latin annō

A.N.

2.
Associate in Nursing.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
an1 (æn, (unstressed) ən)
 
determiner
a form of the indefinite article used before an initial vowel sound: an old car; an elf; an honour
 
usage  An was formerly often used before words that begin with h and are unstressed on the first syllable: an hotel; an historic meeting. Sometimes the initial h was not pronounced. This usage is now becoming obsolete

an or an'2 (æn, (unstressed) ən, æn, (unstressed) ən)
 
conj
(subordinating) an obsolete or dialect word for if See and
 
an' or an'2
 
conj

an3
 
the internet domain name for
Netherlands Antilles

An1 (ɑːn)
 
n
myth Babylonian counterpart: Anu the Sumerian sky god

An2
 
the chemical symbol for
actinon

AN
 
abbreviation for
Anglo-Norman

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

-an, -ean or -ian
 
suffix
1.  (forming adjectives and nouns) belonging to or relating to; a person belonging to or coming from: European
2.  (forming adjectives and nouns) typical of or resembling; a person typical of: Elizabethan
3.  (forming adjectives and nouns) adhering to or following; an adherent of: Christian
4.  (forming nouns) a person who specializes or is expert in: dietitian; phonetician
 
[from Latin -ānus, suffix of adjectives]
 
-ean, -ean or -ian
 
suffix
 
[from Latin -ānus, suffix of adjectives]
 
-ian, -ean or -ian
 
suffix
 
[from Latin -ānus, suffix of adjectives]

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

an
indefinite article, 12c., from O.E. an (with a long vowel) "one, lone," also used as a prefix an- "single, lone;" see one for the divergence of that word from this. Also see a, of which this is the older, fuller form. In other European languages, identity between indefinite
article and the word for "one" remains explicit (e.g. Fr. un, Ger. ein, etc.) O.E. got by without indefinite articles: He was a good man in O.E. was he wæs god man. Circa 15c., a and an commonly were written as one word with the following noun, which contributed to the confusion over how such words as newt and umpire ought to be divided (see N). In Shakespeare, etc., an sometimes is a contraction of as if (a usage first attested c.1300), especially before it.

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
Cite This Source
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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FOLDOC
Computing Dictionary

an definition

networking
The country code for the Netherlands Antilles (Dutch Antilles).
(1999-01-27)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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American Heritage
Abbreviations & Acronyms
AN
  1. airman, Navy

  2. Anglo-Norman

  3. Associate in Nursing

an.
  1. above named

  2. Latin anno (in the year)

  3. annual

  4. annotated

  5. Latin ante (before)

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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