Webster's Dictionary, 1913

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Acidly adverb Sourly; tartly.

Acidness noun Acidity; sourness.

Acidulate transitive verb [ imperfect & past participle Acidulated ; present participle & verbal noun Acidulating ] [ Confer French aciduler . See Acidulous .] To make sour or acid in a moderate degree; to sour somewhat. Arbuthnot.

Acidulent adjective Having an acid quality; sour; acidulous. "With anxious, acidulent face." Carlyle.

Acidulous adjective [ Latin acidulus , dim. of acidus . See Acid.] Slightly sour; sub-acid; sourish; as, an acidulous tincture. E. Burke.

Acidulous mineral waters , such as contain carbonic anhydride.

Acierage noun [ French aciérage , from acier steel.] The process of coating the surface of a metal plate (as a stereotype plate) with steellike iron by means of voltaic electricity; steeling.

Aciform adjective [ Latin acus needle + -form .] Shaped like a needle.

Acinaceous adjective [ Latin acinus a grape, grapestone.] (Botany) Containing seeds or stones of grapes, or grains like them.

Acinaces noun [ Latin , from Greek ....] (Anc. Hist.) A short sword or saber.

Acinaciform (ăs`ĭ*năs"ĭ*fôrm) adjective [ Latin acinaces a short sword + -form : confer French acinaciforme .] (Botany) Scimeter-shaped; as, an acinaciform leaf.

Acinesia (ăs`ĭ*nē"sĭ*ȧ) noun (Medicine) Same as Akinesia .

Acinetiform adjective [ Acinetæ + -form .] (Zoology) Resembling the Acinetæ.

Acinetæ (ăs`ĭ*nē"tē) noun plural [ New Latin , from Greek 'akinhtos immovable.] (Zoology) A group of suctorial Infusoria, which in the adult stage are stationary. See Suctoria .

Aciniform adjective [ Latin acinus a grape, grapestone + -form : confer French acinoforme .]
1. Having the form of a cluster of grapes; clustered like grapes.

2. Full of small kernels like a grape.

Acinose, Acinous adjective [ Latin acinosus , from acinus grapestone.] Consisting of acini , or minute granular concretions; as, acinose or acinous glands. Kirwan.

Acinus noun ; plural Acini [ Latin , grape, grapestone.]
1. (Botany) (a) One of the small grains or drupelets which make up some kinds of fruit, as the blackberry, raspberry, etc. (b) A grapestone.

2. (Anat.) One of the granular masses which constitute a racemose or compound gland, as the pancreas; also, one of the saccular recesses in the lobules of a racemose gland. Quain.

Acipenser noun [ Latin , the name of a fish.] (Zoology) A genus of ganoid fishes, including the sturgeons, having the body armed with bony scales, and the mouth on the under side of the head. See Sturgeon .

Aciurgy noun [ Greek ... a point + ... work.] Operative surgery.

Acknow transitive verb [ Prefix a- + know ; Anglo-Saxon oncnāwan .]
1. To recognize. [ Obsolete] "You will not be acknown , sir." B. Jonson.

2. To acknowledge; to confess. [ Obsolete] Chaucer.

To be acknown (often with of or on ), to acknowledge; to confess. [ Obsolete]

We say of a stubborn body that standeth still in the denying of his fault, This man will not acknowledge his fault, or, He will not be acknown of his fault.
Sir T. More.

Acknowledge transitive verb [ imperfect & past participle Acknowledged ; present participle & verbal noun Acknowledging ] [ Prob. from prefix a- + the verb knowledge . See Knowledge , and confer Acknow .]
1. To of or admit the knowledge of; to recognize as a fact or truth; to declare one's belief in; as, to acknowledge the being of a God.

I acknowledge my transgressions.
Ps. li. 3.

For ends generally acknowledged to be good.

2. To own or recognize in a particular character or relationship; to admit the claims or authority of; to give recognition to.

In all thy ways acknowledge Him.
Prov. iii. 6.

By my soul, I'll ne'er acknowledge thee.

3. To own with gratitude or as a benefit or an obligation; as, to acknowledge a favor, the receipt of a letter.

They his gifts acknowledged none.

4. To own as genuine; to assent to, as a legal instrument, to give it validity; to avow or admit in legal form; as, to acknowledge a deed.

Syn. -- To avow; proclaim; recognize; own; admit; allow; concede; confess. -- Acknowledge , Recognize . Acknowledge is opposed to keep back , or conceal , and supposes that something had been previously known to us (though perhaps not to others) which we now feel bound to lay open or make public. Thus, a man acknowledges a secret marriage; one who has done wrong acknowledges his fault; and author acknowledges his obligation to those who have aided him; we acknowledge our ignorance. Recognize supposes that we have either forgotten or not had the evidence of a thing distinctly before our minds, but that now we know it (as it were) anew, or receive and admit in on the ground of the evidence it brings. Thus, we recognize a friend after a long absence. We recognize facts, principles, truths, etc., when their evidence is brought up fresh to the mind; as, bad men usually recognize the providence of God in seasons of danger. A foreign minister, consul, or agent, of any kind, is recognized on the ground of his producing satisfactory credentials. See also Confess .

Acknowledgedly adverb Confessedly.

Acknowledger noun One who acknowledges.

Acknowledgment (-m e nt) noun
1. The act of acknowledging; admission; avowal; owning; confession. "An acknowledgment of fault." Froude.

2. The act of owning or recognized in a particular character or relationship; recognition as regards the existence, authority, truth, or genuineness.

Immediately upon the acknowledgment of the Christian faith, the eunuch was baptized by Philip.

3. The owning of a benefit received; courteous recognition; expression of thanks. Shak.

4. Something given or done in return for a favor, message, etc. Smollett.

5. A declaration or avowal of one's own act, to give it legal validity; as, the acknowledgment of a deed before a proper officer. Also, the certificate of the officer attesting such declaration.

Acknowledgment money , in some parts of England, a sum paid by copyhold tenants, on the death of their landlords, as an acknowledgment of their new lords. Cowell.

Syn. -- Confession; concession; recognition; admission; avowal; recognizance.

Aclinic adjective [ Greek 'a priv. + ... to incline.] (Physics.) Without inclination or dipping; - - said the magnetic needle balances itself horizontally, having no dip. The aclinic line is also termed the magnetic equator . Prof. August.

Acme noun [ Greek ... point, top.]
1. The top or highest point; the culmination.

The very acme and pitch of life for epic poetry.

The moment when a certain power reaches the acme of its supremacy.
I. Taylor.

2. (Medicine) The crisis or height of a disease.

3. Mature age; full bloom of life. B. Jonson.

Acne noun [ New Latin , probably a corruption of Greek ...] (Medicine) A pustular affection of the skin, due to changes in the sebaceous glands.

Acnodal adjective Pertaining to acnodes.

Acnode noun [ Latin acus needle + English node .] (Geom.) An isolated point not upon a curve, but whose coördinates satisfy the equation of the curve so that it is considered as belonging to the curve.

Acock adverb [ Prefix a- + cock .] In a cocked or turned up fashion.

Acockbill adverb [ Prefix a- + cock + bill : with bills cocked up.] (Nautical) (a) Hanging at the cathead, ready to let go, as an anchor. (b) Topped up; having one yardarm higher than the other.

Acold adjective [ Prob. past participle of Middle English acolen to grow cold or cool, Anglo-Saxon ācōlian to grow cold; prefix a- (cf. Goth. er- , orig. meaning out ) + cōlian to cool. See Cool .] Cold. [ Obsolete] "Poor Tom's acold ." Shak.

Acologic adjective Pertaining to acology.

Acology noun [ Greek ... remedy + - logy .] Materia medica; the science of remedies.

Acolothist noun See Acolythist .

Acolyctine noun [ From the name of the plant.] (Chemistry) An organic base, in the form of a white powder, obtained from Aconitum lycoctonum . Eng. Cyc.

Acolyte noun [ Late Latin acolythus , acoluthus , Greek ... following, attending: confer French acolyte .]

1. (Eccl.) One who has received the highest of the four minor orders in the Catholic church, being ordained to carry the wine and water and the lights at the Mass.

2. One who attends; an assistant. "With such chiefs, and with James and John as acolytes ." Motley.

Acolyth noun Same as Acolyte .

Acolythist noun An acolyte. [ Obsolete]

Aconddylose, Acondylous adjective [ Greek 'a priv. + ... joint.] (Nat. Hist.) Being without joints; jointless.

Aconital adjective Of the nature of aconite.

Aconite noun [ Latin aconitum , Greek ...: confer French aconit .]
1. (Botany) The herb wolfsbane, or monkshood; -- applied to any plant of the genus Aconitum (tribe Hellebore ), all the species of which are poisonous.

2. An extract or tincture obtained from Aconitum napellus , used as a poison and medicinally.

Winter aconite , a plant ( Eranthis hyemalis ) allied to the aconites.

Aconitia noun (Chemistry) Same as Aconitine .

Aconitic adjective Of or pertaining to aconite.

Aconitic adjective (Chemistry) Pert. to or designating a crystalline tribasic acid, ..., obtained from aconite and other plants. It is a carboxyl derivative of itaconic acid.

Aconitine noun (Chemistry) An intensely poisonous alkaloid, extracted from aconite.

Aconitum noun [ Latin See Aconite .] The poisonous herb aconite; also, an extract from it.

As aconitum or rash gunpowder.

Acontia noun plural [ New Latin , from Greek ... a little dart.] (Zoology) Threadlike defensive organs, composed largely of nettling cells ( cnidæ ), thrown out of the mouth or special pores of certain Actiniæ when irritated.

Acontias noun [ New Latin , from Greek ..., from ..., dim. ... dart.] (Zoology) Anciently, a snake, called dart snake ; now, one of a genus of reptiles closely allied to the lizards.

Acopic adjective [ Greek ... priv. + ... striking. weariness, ... to strike.] (Medicine) Relieving weariness; restorative.

Acorn noun [ Anglo-Saxon æcern , from æcer field, acre; akin to Dutch aker acorn, German ecker , Icelandic akarn , Danish agern , Goth. akran fruit, akrs field; -- orig. fruit of the field. See Acre .]
1. The fruit of the oak, being an oval nut growing in a woody cup or cupule.

2. (Nautical) A cone-shaped piece of wood on the point of the spindle above the vane, on the mast-head.

3. (Zoology) See Acorn- shell .