Acid ¹

Definition: Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: Sour-tempered.

Acid ²

Definition: Of or pertaining to an acid; as, acid reaction.

Acid ³

Definition: A sour substance.

Acid ⁴

Definition: One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids.

acid ⁵

Definition: street name for lysergic acid diethylamide

acid ⁶

Definition: any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt

acid ⁷

Definition: containing acid; "an acid taste"

acid ⁸

Definition: harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts