Share this entry
Lewis acid Line breaks: Lewis acid

Definition of Lewis acid in English:


A compound or ionic species which can accept an electron pair from a donor compound.
Example sentences
  • In this electrophilic aromatic substitution, the first electrophile is the Lewis acid that accepts the halogen from an alkyl halide (the nucleophile).
  • In simple additions, the carbonyl compounds can behave as both Lewis acids and Lewis bases depending on what reagents are present.
  • In a coordinate covalent bond, both electrons are donated by the Logan, a Lewis base, to the metal atom, a Lewis acid.


1940s: named after Gilbert N. Lewis (1875–1946), American chemist.

Definition of Lewis acid in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources