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Synonyms
ac·id (ăśĭd)

[From Latin acidus, sour, from acēre, to be sour.]

noun 

  1. Chemistry
    1. Any of a class of substances whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red, and the ability to react with bases and certain metals to form salts.
    2. A substance that yields hydrogen ions when dissolved in water.
    3. A substance that can act as a proton donor.
    4. A substance that can accept a pair of electrons to form a covalent bond.
  2. A substance having a sour taste.
  3. The quality of being sarcastic, bitter, or scornful: wrote with acid about her first marriage.
  4. Slang See LSD1

adjective 

  1. Chemistry
    1. Of, relating to, or containing an acid.
    2. Having a high concentration of acid.
    3. Having the characteristics of an acid.
    1. Having a pH of less than 7.
    2. Having a relatively high concentration of hydrogen ions.
  3. Geology Containing a large proportion of silica: acid rocks.
  4. Having a sour taste. See synonyms at sour
  5. Biting, sarcastic, or scornful: an acid wit; an acid tone of voice.

derivatives

aćid·ly
adverb
aćid·ness
noun
LSD1 (ĕĺĕs-dḗ)

[l(y)s(ergic acid) d(iethylamide).]

noun 

A crystalline compound, CHNO, derived from lysergic acid and used as a powerful hallucinogenic drug. Also called acid