acid
/ˈæsɪd/ adjective, noun
Forms acider acidest acids
- adjective Sour, sharp, or biting to the taste; tart; having the taste of vinegar. “acid fruits or liquors”
- adjective (figuratively) Sour-tempered. “His response was harsh and acid.”
- adjective Of or pertaining to an acid; acidic. “acid soils”
- adjective (music) Denoting a musical genre that is a distortion (as if hallucinogenic) of an existing genre, as in acid house, acid jazz, acid rock.
- noun A sour substance.
- noun Any compound which yields H+ ions (protons) when dissolved in water; an Arrhenius acid.
- noun Any compound that easily donates protons to a base; a Brønsted acid.
- noun Any compound that can accept a pair of electrons to form a covalent bond; a Lewis acid.
- noun Any corrosive substance.
- noun (uncountable, slang) LSD, lysergic acid diethylamide.
Synonyms
acidic back breaker battery-acid dose dot Elvis loony toons Lucy in the sky with diamonds pane superman window pane Zen acerb acerbic acrid bitter blistering caustic sulfurous sulphurous virulent vitriolic acidulent acidulous
Antonyms
Etymology
From French acide, from Latin acidus (“sour, acid”), from aceō (“to be sour”). Doublet of agita.
Webster’s 1913
- adjective Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: Sour-tempered.
- adjective Of or pertaining to an acid; as, acid reaction.
- noun A sour substance.
- noun One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in di
Etymology [L. acidus sour, fr. the root ak to be sharp: cf. F. acide. Cf. Acute.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “acid”, CC BY-SA 4.0. Details