Webster's Revised Unabridged Dictionary · 1913

as

as (az) , adverb and conjunction

[Old English as, als, alse, also, al swa, Anglo-Saxon eal swā, lit. all so; hence, quite so, quite as: compare German als as, than, also so, then. See Also.]

1.
Denoting equality or likeness in kind, degree, or manner; like; similar to; in the same manner with or in which; in accordance with; in proportion to; to the extent or degree in which or to which; equally; no less than; as, ye shall be as gods, knowing good and evil; you will reap as you sow; do as you are bidden.
His spiritual attendants adjured him, as he loved his soul, to emancipate his brethren. — Macaulay

As is often preceded by one of the antecedent or correlative words such, same, so, or as, in expressing an equality or comparison; as, give us such things as you please, and so long as you please, or as long as you please; he is not so brave as Cato; she is as amiable as she is handsome; come as quickly as possible. “Bees appear fortunately to prefer the same colors as we do.” Lubbock. As, in a preceding part of a sentence, has such or so to answer correlatively to it; as with the people, so with the priest.

2.
In the idea, character, or condition of, -- limiting the view to certain attributes or relations; as, virtue considered as virtue; this actor will appear as Hamlet.
The beggar is greater as a man, than is the man merely as a king. — Dewey
3.
While; during or at the same time that; when; as, he trembled as he spoke.
As I return I will fetch off these justices. — Shakespeare
4.
Because; since; it being the case that.
As the population of Scotland had been generally trained to arms... they were not indifferently prepared. — Sir W. Scott
5.
Expressing concession. (Often approaching though in meaning).
We wish, however, to avail ourselves of the interest, transient as it may be, which this work has excited. — Macaulay
6.
That, introducing or expressing a result or consequence, after the correlatives so and such. [Obsolete]
I can place thee in such abject state, as help shall never find thee. — Rowe
The relations are so uncertain as they require a great deal of examination. — Bacon
7.
As if; as though. [Obsolete or Poetic]
He lies, as he his bliss did know. — Waller
8.
For instance; by way of example; thus; -- used to introduce illustrative phrases, sentences, or citations.
9.
Than. [Obsolete & Rare]
The king was not more forward to bestow favors on them as they free to deal affronts to others their superiors. — Fuller

i. e., may he have.

10.
Expressing a wish. [Obsolete]
As have, — Chaucer
Collocations (13)
As.. as , See So.. as, under So.
As far as , to the extent or degree. As far as can be ascertained. — Macaulay
As far forth as , as far as. [Obsolete] — Chaucer
As for or As to , in regard to; with respect to.
As good as , not less than; not falling short of.
As good as one's word , faithful to a promise.
As if or As though , of the same kind, or in the same condition or manner, that it would be if.
As it were , a qualifying phrase used to apologize for or to relieve some expression which might be regarded as inappropriate or incongruous; in a manner.
As now , just now. [Obsolete] — Chaucer
As swythe , as quickly as possible. [Obsolete] — Chaucer
As well , also; too; besides. — Addison
As well as , equally with, no less than. I have understanding as well as you. — Job xii. 3
As yet , until now; up to or at the present time; still; now.

As ({not transcribed}) , noun

[See Ace.]

An ace. [Obsolete] — Chaucer
Collocations (1)
Ambes-as , double aces.

As , noun

(Chemistry) the chemical symbol for arsenic.

As ({not transcribed}) , noun

[Latin as. See Ace.]

1.
A Roman weight, answering to the libra or pound, equal to nearly eleven ounces Troy weight. It was divided into twelve ounces.
2.
A Roman copper coin, originally of a pound weight (12 oz.); but reduced, after the first Punic war, to two ounces; in the second Punic war, to one ounce; and afterwards to half an ounce.