¹acid

adjective ac·id \ˈa-səd\

: of, relating to, or having the qualities of an acid

: sharp, strong, and critical in tone

Full Definition of ACID

a : sour, sharp, or biting to the taste <an acid flavor>

b : sharp, biting, or sour in manner, disposition, or nature <an acid individual> <an acid personality>

c : sharply clear, discerning, or pointed <an acid wit> <acid criticism>

d : piercingly intense and often jarring <acid yellow>

a : of, relating to, or being an acid; also : having the reactions or characteristics of an acid <acid soil> <an acid solution>

b of salts and esters : derived by partial exchange of replaceable hydrogen <acid sodium carbonate NaHCO₃>

c : containing or involving the use of an acid (as in manufacture) <an acid bath>

d : marked by or resulting from an abnormally high concentration of acid <acid indigestion>

: relating to or made by a process (as in making steel) in which the furnace is lined with acidic material and an acidic slag is used

: rich in silica <acid rocks>

— ac·id·ly adverb

— ac·id·ness noun

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Origin of ACID

French or Latin; French acide, from Latin acidus, from acēre to be sour — more at acet-

First Known Use: 1626

Related to ACID

Synonyms: sour, acidic, acidulous, sourish, tart, tartish, vinegary

Antonyms: amiable, good-humored, good-natured, good-tempered

Other Chemical Engineering Terms

alkali, cation, decant, hygroscopic, isotope, oxidize, slurry, solute, viscous

Rhymes with ACID

Chasid, Hasid, jassid, placid

²acid

noun

chemistry : a chemical with a sour taste that forms a salt when mixed with a base

Full Definition of ACID

: a sour substance; specifically : any of various typically water-soluble and sour compounds that in solution are capable of reacting with a base to form a salt, redden litmus, and have a pH less than 7, that are hydrogen-containing molecules or ions able to give up a proton to a base, or that are substances able to accept an unshared pair of electrons from a base

: something incisive, biting, or sarcastic <a social satire dripping with acid>

: lsd

— ac·idy \ˈa-sə-dē\ adjective

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