addition

https://doi.org/10.1351/goldbook.A00132
  1. Refers to @A00133@ or addition @T06446@.
  2. Loosely, the formation of an @A00138@. (For an example, see @L03508@.)
  3. Loosely, any @A00472@ or @A00512@.
Source:
PAC, 1994, 66, 1077.(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1081 [Terms] [Paper]