Definition of acid

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- Acid adj
- 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 and medical ethics"; "a sulfurous denunciation" [syn: {acerb}, {acerbic}, {acrid}, {bitter}, {blistering}, {caustic}, {sulfurous}, {sulphurous}, {venomous}, {virulent}, {vitriolic}]
- Containing acid; "an acid taste" n
- 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
- Street name for lysergic acid diethylamide [syn: {back breaker}, {battery-acid}, {dose}, {dot}, {Elvis}, {loony toons}, {Lucy in the sky with diamonds}, {pane}, {superman}, {window pane}, {Zen}]