acid

1. 1

   Sour, sharp, or biting to the taste; tart; having the taste of vinegar.

   • acid fruits or liquors
2. 2

   Sour-tempered.figuratively

   • His response was harsh and acid.
3. 3

   Of or pertaining to an acid; acidic.

   • acid soils
4. 4

   Denoting a musical genre that is a distortion (as if hallucinogenic) of an existing genre, as in acid house, acid jazz, acid rock.

syn. acidic

ant. alkaline · base

1. 1

   A sour substance.countableuncountable

2. 2

   Any compound which yields H+ ions (protons) when dissolved in water; an Arrhenius acid.countableuncountable

   • SE onset depends on a complex network of interactions among plant growth regulators, mainly auxins and cytokinins, during the proembryogenic early stages, and ethylene and gibberellic and abscisic acids later in the development of somatic e
3. 3

   Any compound that easily donates protons to a base; a Brønsted acid.countableuncountable

4. 4

   Any compound that can accept a pair of electrons to form a covalent bond; a Lewis acid.countableuncountable

5. 5

   Any corrosive substance.countableuncountable

   • You are in error. / This is terror. / This is your banishment. This land is mine. / This is what you earn. / This is the Law of No Return. / This is the sour dough, this the sweet wine. / This is my history, this my race / And this unhappy
6. 6

   LSD, lysergic acid diethylamide.slanguncountable

   • In the end, though, there is one sure way to distinguish a real hippie from his assorted sympathizers: hippies drop acid. That is, real hippies frequently, if irregularly, ingest LSD.

syn. acid

ant. alkali · base