Definition of "causticity" in Anglais

noun

1. The quality of being physically caustic; burning, corrosive.

   • 1996, Christopher J. Biermann, Handbook of Pulping and Papermaking, Academic Press, 3.8 Kraft Pulping, p. 89, https://books.google.ca/books?id=sfZfyEmqs_AC&printsec=frontcover#v=onepage&q&f=false Causticity is the ratio of NaOH to active alkali (as always both chemicals are on an Na₂O basis), expressed as a percentage.

2. (figuratively) Being caustic in speech, humour etc.