as

1 [az; unstressed uhz]
adverb
1.
to the same degree, amount, or extent; similarly; equally: I don't think it's as hot and humid today as it was yesterday.
2.
for example; for instance: Some flowers, as the rose, require special care.
3.
thought to be or considered to be: the square as distinct from the rectangle; the church as separate from the state.
4.
in the manner (directed, agreed, promised, etc.): She sang as promised. He left as agreed.
conjunction
5.
(used correlatively after an adjective or adverb preceded by an adverbial phrase, the adverbial as, or another adverb) to such a degree or extent that: It came out the same way as it did before. You are as good as you think you are.
6.
(without antecedent) in the degree, manner, etc., of or that: She's good as gold. Do as we do.
7.
at the same time that; while; when: as you look away.
8.
since; because: As you are leaving last, please turn out the lights.
9.
though: Questionable as it may be, we will proceed.
10.
with the result or purpose: He said it in a voice so loud as to make everyone stare.
11.
Informal. (in dependent clauses) that: I don't know as I do.
12.
Midland and Southern U.S. and British Dialect, than.
pronoun
13.
(used relatively) that; who; which (usually preceded by such or the same ): I have the same trouble as you had.
14.
a fact that: She did her job well, as can be proved by the records.
15.
New England, Midland, and Southern U.S. who; whom; which; that: Them as has gets.
preposition
16.
in the role, function, or status of: to act as leader.
Idioms
17.
as … as, (used to express similarity or equality in a specified characteristic, condition, etc., as between one person or thing and another): as rich as Croesus.
18.
as far as, to the degree or extent that: It is an excellent piece of work, as far as I can tell.
19.
as for/to, with respect to; in reference to: As for staying away, I wouldn't think of it.
20.
as good as,
a.
equivalent to; in effect; practically: as good as new.
b.
true to; trustworthy as: as good as his word.
21.
as how, Chiefly Midland and Southern U.S. that; if; whether: He allowed as how it was none of my business. I don't know as how I ought to interfere.
22.
as if/though, as it would be if: It was as if the world had come to an end.
23.
as is, in whatever condition something happens to be, especially referring to something offered for sale in a flawed, damaged, or used condition: We bought the table as is.
24.
as it were, in a way; so to speak: He became, as it were, a man without a country.
25.
as long as. long1 ( def 39 ).
26.
as of, beginning on; on and after; from: This price is effective as of June 23.
27.
as regards, with regard or reference to; concerning: As regards the expense involved, it is of no concern to him.
28.
as such,
a.
as being what is indicated; in that capacity: An officer of the law, as such, is entitled to respect.
b.
in itself or in themselves: The position, as such, does not appeal to him, but the salary is a lure.
29.
as well. well1 ( def 18 ).
30.
as well as. well1 ( def 19 ).
31.
as yet, up to the present time; until now: As yet, no one has thought of a solution.

Origin:
before 1000; Middle English as, als, alse, also, Old English alswā, ealswā all so (see also), quite so, quite as, as; cognate with Middle Dutch alse (Dutch als), Old High German alsō (Middle High German álsō, álse, als, German also so, als as, as if, because)


8. See because.


As a conjunction, one sense of as is “because”: As she was bored, Sue left the room. As also has an equally common use in the sense “while, when”: As the parade passed by, the crowd cheered and applauded. These two senses sometimes result in ambiguity: As the gates were closed, he walked away. (When? Because?)
Asas is standard in both positive and negative constructions: The fleet was as widely scattered then as it had been at the start of the conflict. Foreign service is not as attractive as it once was. Soas is sometimes used in negative constructions (… not so attractive as it once was) and in questions (“What is so rare as a day in June?”).
The phrase as far as generally introduces a clause: As far as money is concerned, the council has exhausted all its resources. In some informal speech and writing, as far as is treated as a preposition and followed only by an object: As far as money, the council has exhausted all its resources.
As to as a compound preposition has long been standard though occasionally criticized as a vague substitute for about, of, on, or concerning: We were undecided as to our destination. As to sometimes occurs at the beginning of a sentence, where it introduces an element that would otherwise have less emphasis: As to his salary, that too will be reviewed. As to what and as to whether are sometimes considered redundant but have long been standard: an argument as to what department was responsible. See also all, because, farther, like, so1.
Dictionary.com Unabridged

such

[suhch]
adjective
1.
of the kind, character, degree, extent, etc., of that or those indicated or implied: Such a man is dangerous.
2.
of that particular kind or character: The food, such as it was, was plentiful.
3.
like or similar: tea, coffee, and such commodities.
4.
(used with omission of an indication of comparison) of so extreme a kind; so great, good, bad, etc.: He is such a liar.
5.
being as stated or indicated: Such is the case.
6.
being the person or thing or the persons or things indicated: If any member be behind in his dues, such member shall be suspended.
7.
definite but not specified; such and such: Allow such an amount for food and such an amount for rent.
adverb
8.
so; very; to such a degree: such pleasant people.
9.
in such a way or manner.
pronoun
10.
such a person or thing or such persons or things: kings, princes, and such.
11.
someone or something indicated or exemplified: He claims to be a friend but is not such.
Idioms
12.
as such. as1 ( def 30 ).
13.
such as,
a.
of the kind specified: A plan such as you propose will never succeed.
b.
for example: He considers quiet pastimes, such as reading and chess, a bore.

Origin:
before 900; Middle English such, swulch, suilch, Old English swilc, swelc < Germanic *swa so1 + *līko- like1; cognate with German solch, Old Norse slīkr, Gothic swaleiks

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Collins
World English Dictionary
as1 (æz, (unstressed) əz)
 
conj
1.  (often preceded by just) while; when; at the time that: he caught me as I was leaving
2.  in the way that: dancing as only she can
3.  that which; what: I did as I was told
4.  (of) which fact, event, etc (referring to the previous statement): to become wise, as we all know, is not easy
5.  as it were in a way; so to speak; as if it were really so
6.  as you were
 a.  a military command to withdraw an order, return to the previous position, etc
 b.  a statement to withdraw something just said
7.  since; seeing that: as you're in charge here, you'd better tell me where to wait
8.  in the same way that: he died of cancer, as his father had done
9.  in spite of the extent to which: intelligent as you are, I suspect you will fail
10.  for instance: capital cities, as London
 
adv, —conj
11.  a.  used correlatively before an adjective or adverb and before a noun phrase or a clause to indicate identity of extent, amount, etc: she is as heavy as her sister; she is as heavy now as she used to be
 b.  used with this sense after a noun phrase introduced by the same: she is the same height as her sister
 
prep
12.  in the role of; being: as his friend, I am probably biased
13.  as for, as to with reference to: as for my past, I'm not telling you anything
14.  formal as from, as of (in expressions of time) from: fares on all routes will rise as from January 11
15.  as if, as though as it would be if: he talked as if he knew all about it
16.  as is, as it is in the existing state of affairs: as it is, I shall have difficulty finishing all this work, without any more
17.  as per See per
18.  as regards See regard
19.  as such See such
20.  such as See such
21.  as was in a previous state
22.  as well See well
23.  as yet up to now; so far: I have received no compensation as yet
 

as2 (æs)
 
n
1.  an ancient Roman unit of weight approximately equal to 1 pound troy (373 grams)
2.  the standard monetary unit and copper coin of ancient Rome
 
[C17: from Latin ās unity, probably of Etruscan origin]

as3
 
the internet domain name for
American Samoa

As
 
symbol for
1.  chem arsenic
2.  altostratus

AS
 
abbreviation for
1.  Also: A.S. Anglo-Saxon
2.  antisubmarine
3.  Australian Standards

such (sʌtʃ)
 
determiner
1.  a.  of the sort specified or understood: such books shouldn't be sold here
 b.  (as pronoun): such is life; robbers, rapists, and such
2.  so great; so much: such a help; I've never seen such weeping
3.  as such
 a.  in the capacity previously specified or understood: a judge as such hasn't so much power
 b.  in itself or themselves: intelligence as such can't guarantee success
4.  such and such specific, but not known or named: at such and such a time
5.  such as
 a.  for example: animals, such as elephants and tigers
 b.  of a similar kind as; like: people such as your friend John make me angry
 c.  of the (usually small) amount, etc: the food, such as there was, was excellent
6.  such that so that: used to express purpose or result: power such that it was effortless
 
adv
7.  (intensifier): such nice people; such a nice person that I gave him a present
 
[Old English swilc; related to Old Frisian sālik, Old Norse slīkr, Gothic swaleiks, Old High German sulih]

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

as
late 12c., worn-down form of O.E. alswa "quite so" (see also). Equivalent to so; any distinction in use is purely idiomatic. Related to Ger. als "as, than." Phrase as well "just as much" is recorded from late 15c.; the phrase also can imply "as well as not," "as well as anything
else." Interjection of incredulity as if! is attested from 1995.

such
O.E. swylc, swilc from a P.Gmc. compound *swalikaz "so formed" (cf. O.S. sulik, O.N. slikr, O.Fris. selik, M.Du. selc, Du. zulk, O.H.G. sulih, Ger. solch, Goth. swaleiks), from swa "so" (see so) + *likan "form," source of O.E. gelic "similar" (see like). Colloquial suchlike (1422) is pleonastic.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

As
The symbol for the element arsenic.

AS abbr.
Latin auris sinistra (left ear)

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
As  
The symbol for arsenic.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
as
Assamese
As
arsenic
AS
  1. air speed

  2. American Samoa

  3. Anglo-Saxon

  4. antisubmarine

  5. Associate in Science

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
American Heritage
Idioms & Phrases

such as

For example, as in She adores the English novels of manners, such as those by Austen and Trollope. [Late 1600s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
Cleaning experts recommend travelers use antiseptic wipes on surfaces such as
  armrests and tray tables.
The family get-together could also be planned for a specific place such as a
  community nature center.
Smoke particles slightly larger than air molecules scatter slightly longer
  wavelengths, such as yellows.
Only the grit was useful, mostly for industrial applications such as dental
  drills and hacksaw blades.
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