acid

[ as-id ]
/ ˈæs ɪd /
|||

noun

adjective


Nearby words

  1. acicular,
  2. acicularity,
  3. acicularly,
  4. aciculate,
  5. aciculum,
  6. acid anhydride,
  7. acid cell,
  8. acid deposition,
  9. acid drop,
  10. acid dust

Idioms

    put on the acid, Australian Slang. to importune someone, as for money, sexual favors, or confidential information.

Origin of acid

1620–30; < Latin acidus sour, akin to ācer sharp, acētum vinegar, acescent, acicula

Related forms
Can be confusedacerbic acid acrid

Synonym study

7. Acid, astringent are terms used figuratively of wit or humor. Acid suggests a sharp, biting, or ill-natured quality: an acid joke about an opponent. Astringent connotes severity but usually also a bracing quality, as of something applied with curative intent: astringent criticism.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for acid


British Dictionary definitions for acid

acid

/ (ˈæsɪd) /

noun

adjective

Derived Formsacidly, adverbacidness, nounacidy, adjective

Word Origin for acid

C17: (first used by Francis Bacon): from French acide or Latin acidus, from acēre to be sour or sharp

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for acid
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for acid

acid

[ ăsĭd ]

n.

adj.


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for acid

acid

[ ăsĭd ]

Any of a class of compounds that form hydrogen ions when dissolved in water, and whose aqueous solutions react with bases and certain metals to form salts. Acids turn blue litmus paper red and have a pH of less than 7. Their aqueous solutions have a sour taste. Compare base.
Related formsacidic adjective

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for acid

acid

A sour-tasting material (usually in a solution) that dissolves metals and other materials. Technically, a material that produces positive ions in solution. An acid is the opposite of a base and has a pH of 0 to 7. A given amount of an acid added to the same amount of a base neutralizes the base, producing water and a salt. Common vinegar, for example, is a weak solution of acetic acid.

Note

Figuratively, acid applies to anything sour or biting; for example, an “acid wit” is sharp and unpleasant.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.