acid

noun
UK: /ˈæsɪd/
US: /ˈæsɪd/

  1. A chemical substance with a pH less than 7 that can react with and dissolve certain metals.

    1. The lab uses strong acid. [ ] [ ]
    2. The chemist carefully handled the hydrochloric acid to avoid any spills or reactions. [ ] [ ]

  2. A drug, especially LSD.

    1. He took some acid last night. [ ] [ ]
    2. The effects of the acid trip were intense and unsettling, lasting for several hours. [ ] [ ]

Synonyms

tart acrimonious sour bitter
acid adjective

  1. Having a pH of less than 7.

    1. Lemons are acid. [ ] [ ]
    2. The soil in this region is highly acid, making it unsuitable for growing certain crops. [ ] [ ]

  2. Sharp, bitter, or biting in taste or manner.

    1. He had an acid tone. [ ] [ ]
    2. Her acid remarks about his presentation left him feeling discouraged and self-conscious. [ ] [ ]

Frequently Asked Questions

The word "acid" in English means: A chemical substance with a pH less than 7 that can react with and dissolve certain metals., A drug, especially LSD..

The phonetic transcription of "acid" is /ˈæsɪd/ in British English and /ˈæsɪd/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "acid": tart, acrimonious, sour, bitter.

Example usage of "acid": "The lab uses strong acid.". More examples on the page.