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  1. Base | Definition, Examples, & Facts | Britannica

    Oct 18, 2025 · Bases are chemical compounds that, in solution, are soapy to the touch and turn red vegetable dyes blue. When mixed, acids and bases neutralize one another and produce salts.

  2. BASE Definition & Meaning - Merriam-Webster

    The meaning of BASE is the bottom of something considered as its support : foundation. How to use base in a sentence. Synonym Discussion of Base.

  3. BASE Definition & Meaning | Dictionary.com

    A base is the opposite of an acid and has a pH of 7 to 14. A given amount of a base added to the same amount of an acid neutralizes the acid; water and a salt are produced.

  4. What Is a Base in Chemistry? Definition and Examples

    Jun 19, 2021 · In chemistry, a base is a substance that reacts with acids to form a salt and which releases hydroxide ions, accepts protons, or donates electrons in aqueous solution. Learn about the …

  5. 6.1: What is an Acid and a Base? - Chemistry LibreTexts

    Basic (alkaline) substances feel soupy, while acidic substances may sting. The acids turn blue litmus paper to read but do not change the color of red litmus paper. Bases turn red litmus paper blue but …

  6. What are Bases? - Definition, Examples, Types, Properties and Uses

    Jul 23, 2025 · Base is a chemical compound that consists of OH- ions and accepts protons. Base in Chemistry are those compounds that turn red litmus blue and when reacted with acid they neutralize …

  7. The Base (neo-Nazi group) - Wikipedia

    The Base is a neo-Nazi group and paramilitary training network formed in 2018 by Rinaldo Nazzaro. The group espouses accelerationist and white nationalist ideology.

  8. BASE definition and meaning | Collins English Dictionary

    The base of something is its lowest edge or part. There was a cycle path running along this side of the wall, right at its base. Line the base and sides of a 20cm deep round cake tin with paper. Synonyms: …

  9. BASE | definition in the Cambridge English Dictionary

    base (for sth) A cut to 10p per share would give a yield of 5.8% and a new base for dividend growth. The newspaper hopes to add several million dollars to its revenue base from the switchover. They took …

  10. Bases in Chemistry: Definition, Properties, and Examples

    A base in chemistry is a substance that either accepts hydrogen ions (protons) or donates electron pairs during a chemical reaction. This concept is described using the Arrhenius, Brønsted-Lowry, and …