(chemistry) Having a pH less than 7, or being sour, or having the strength to neutralize alkalis, or turning a litmus paper red. / (mineralogy) Containing a high percentage of silica; opposed to basic.

(idiomatic, informal) Exaggerated, bizarre or unpredictable. / Used other than figuratively or idiomatically: see on, acid.

One who treats blocked oil or gas wells with acid.

plural of acidizer

comparative form of acid: more acid

(databases) Acronym of atomicity, consistency, isolation, and durability, a set of properties that guarantee database transactions are processed reliably.

The quality or state of being acid. / Sourness; tartness; sharpness to the taste. / (pathology) Excessive acid quality, as in gastric secretions.

Sour, sharp, or biting to the taste; tart; having the taste of vinegar. / (figuratively) Sour-tempered. / Of or pertaining to an acid; acidic.

acidity, sourness

To impregnate with acid; acidify. / (petroleum geology) To treat (a limestone or sandstone formation) with HCl or HF to enlarge void spaces in it.