noun (plural alkalis)
A chemical compound that neutralizes or effervesces with acids and turns litmus blue; typically, a caustic or corrosive substance of this kind such as lime or soda. Often contrasted with acid; compare with base1.
More example sentences
- Amides are hydrolysed to ammonium salts with catalysis by acids or alkalis.
- They resist most chemicals, including many acids, alkalis, oxidizing agents, and solvents.
- Nickel has good resistance to corrosion in the normal atmosphere, in natural freshwaters and in deaerated nonoxidizing acids, and it has excellent resistance to corrosion by caustic alkalis…
Definition of alkali in:
- The British & World English dictionary