acid meaning

[ 'æsid ] Pronunciation:   "acid" in a sentence
Noun: acid  asid
  1. 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 
  2. Street name for lysergic acid diethylamide
    - back breaker, battery-acid, dose, dot, Elvis, loony toons, Lucy in the sky with diamonds, pane, superman, window pane, Zen
Adjective: acid  asid
  1. Harsh or corrosive in tone
    "a barrage of acid comments"
    - acerb, acerbic, acrid, bitter, blistering, caustic, sulfurous [N. Amer], sulphurous [Brit, Cdn], virulent, vitriolic, sulphureous [Brit] 
  2. Being sour to the taste
    - acidic, acidulent, acidulous 
  3. Having the characteristics of an acid
    "an acid reaction"

Derived forms: acids

See also: acidic, acidify, acidity, acidulate, sour, unpleasant

Type of: chemical compound, compound, LSD, lysergic acid diethylamide

Encyclopedia: Acid

[American slang]
n. lysergic acid diethylamide (LSD).
• Acid and pot! That's all you think about.
• Freddy got hold of some bad acid and freaked out.

[British slang]
Noun. The drug LSD. Lysergic acid diethylamide. [Orig. U.S. 1960s]

A substance that dissociates in water solution and forms hydrogen (H) ions (e.g., sulfuric acid). Compare BASE,
acid depolarizer Also called acidic depolarizer. An acid, in addition to the electrolyte, used in some primary cells to slow the process of polarization.

1 : sour, sharp, or biting to the taste
a : of, relating to, or being an acid; also : having the reactions or characteristics of an acid ‹an acid solution›
b of salts and esters : derived by partial exchange of replaceable hydrogen ‹acid sodium carbonate NaHCO3
c : marked by or resulting from an abnormally high concentration of acid ‹acid indigestion› —not used technically
1 : a sour substance; specif : any of various typically water-soluble and sour compounds that in solution are capable of reacting with a base to form a salt, that redden litmus, that have a pH less than 7, and that are hydrogen-containing molecules or ions able to give up a proton to a base or are substances able to accept an unshared pair of electrons from a base
2 : LSD


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  1. acids used in pickling can include sulfuric.
  2. in this respect it resembles picric acid.
  3. acid had pitted the surface of the silver.
  4. zinc displaces the hydrogen of dilute acids.
  5. the spent acid is passed on to be denitrated.

Related Words

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