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A simple or compound principle, whose presence is necessary to produce acidity, as oxygen, chlorine, bromine, iodine, etc.

To make acid; to convert into an acid; as, to acidify sugar.

cially by a chemical process based on the law of chemical combinations, or the fact that, to produce a complete reaction, a certain definite weight of reagent is required. -- Ac`id*i*met"ric*al, a.

The quality of being sour; sourness; tartness; sharpness to the taste; as, the acidity of lemon juice.

the converter or hearth is lined with acid, that is, highly siliceous, material. Opposed to basic process.

To make sour or acid in a moderate degree; to sour somewhat. Arbuthnot.

To recognize. [Obs.] "You will not be acknown, sir." B. Jonson.

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. Macaulay.

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 acknowled…

The top or highest point; the culmination. The very acme and pitch of life for epic poetry. Pope. The moment when a certain power reaches the acme of its supremacy. I. Taylor.

A pustular affection of the skin, due to changes in the sebaceous glands.

Pertaining to acnodes.

whose coördinates satisfy the equation of the curve so that it is considered as belonging to the curve.

Hanging at the cathead, ready to let go, as an anchor.

Cold. [Obs.] "Poor Tom's acold." Shak.

Pertaining to acology.

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.

The herb wolfsbane, or monkshood; -- applied to any plant of the genus Aconitum (tribe Hellebore), all the species of which are poisonous.

Of or pertaining to aconite.

Anciently, a snake, called dart snake; now, one of a genus of reptiles closely allied to the lizards.