acid

English Online Dictionary. What means acid‎? What does acid mean?

English

Etymology

From French acide, from Latin acidus (“sour, acid”), from aceō (“I am sour”). Doublet of agita and acetic.

Pronunciation

• (Received Pronunciation, General American) enPR: ăs'ĭd, IPA^(key): /ˈæsɪd/
• Rhymes: -æsɪd

Adjective

acid (comparative acider, superlative acidest)

1. Sour, sharp, or biting to the taste; tart; having the taste of vinegar.

2. (figuratively) Sour-tempered.
3. Of or pertaining to an acid; acidic.
4. (music) Denoting a musical genre that is a distortion (as if hallucinogenic) of an existing genre, as in acid house, acid jazz, acid rock.

Quotations

• For quotations using this term, see Citations:acid.

Synonyms

• acidic

Antonyms

• alkaline
• base

Derived terms

Translations

Noun

acid (countable and uncountable, plural acids)

1. A sour substance.
2. (chemistry)
   1. Any compound which yields H+ ions (protons) when dissolved in water; an Arrhenius acid.
   2. Any compound that easily donates protons to a base; a Brønsted acid.
   3. Any compound that can accept a pair of electrons to form a covalent bond; a Lewis acid.
3. Any corrosive substance.
4. (uncountable, slang) LSD, lysergic acid diethylamide.

Antonyms

• alkali
• base

Hyponyms

• See also Thesaurus:acid

Derived terms

Descendants

• → Welsh: asid

Translations

See also

• acerbic
• acro-
• pH

References

• “acid”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

Anagrams

• -adic, Daic, adic, cadi, caid

Albanian

Noun

acid m (plural acide, definite acidi, definite plural acidet)

1. (chemistry) acid

   Synonym: thartor

Declension

Further reading

• FGJSSH: Fjalor i gjuhës së sotme shqipe [Dictionary of the modern Albanian language]‎^[2], 1980
• “acid”, in FGJSH: Fjalor i gjuhës shqipe [Dictionary of the Albanian language] (in Albanian), 2006

Dutch

Etymology

Unadapted borrowing from English acid.

Attested since at least 1970.

Pronunciation

Noun

acid m (uncountable)

1. (slang) LSD, lysergic acid diethylamide

   Synonym: LSD

2. (music) acid

Romanian

Etymology

Borrowed from French acide, from Latin acidus (“sour, acid”).

Pronunciation

• IPA^(key): [aˈt͡ʃid]

Adjective

acid m or n (feminine singular acidă, masculine plural acizi, feminine and neuter plural acide)

1. acid, acidic

Declension

Related terms

• aciditate

Noun

acid m (plural acizi)

1. acid

Declension

Derived terms

• acid dezoxiribonucleic

Further reading

• acid in DEX online—Dicționare ale limbii române (Dictionaries of the Romanian language)

Spanish

Adjective

acid (invariable)

1. (music) acid

Noun

acid m (uncountable)

1. (music) acid

Further reading

• “acid”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10