Alkaline (adjective)

  1. Having a pH greater than 7; neutralizing acids.
  2. Relating to or denoting a solution with a pH greater than 7.

Origin:

Late 18th century: from alkali + -ine.

Examples:

  1. Alkaline soils are not suitable for growing certain plants.
  2. The alkaline water from the well had a pH of 8.5.
  3. Baking soda is alkaline and can neutralize stomach acid.
  4. The alkaline solution used to clean the metal surfaces was very effective.
  5. Alkaline batteries are more long-lasting than acid batteries.
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