Definition of "vitiation" in English

noun

1. A reduction in the value, or an impairment in the quality of something.

   • 1810, George Wilson, M.D., F.R.D.E. Ch. II. General Sketch of Cavendish's Scientific Researches and Discoveries, in The Life of the Honᵇˡᵉ Henry Cavendish, p. 39. […] air was universally reputed to be a simple or elementary body. It was liable, according to the phlogistians, to vitiation, by the addition to it of phlogiston […] being more or less phlogisticated, according to the degree of its power to support respiration and combustion.

2. Moral corruption.

3. An abolition or abrogation.