[ hahy-druh-fawr-muh-ley-shuh n ]
/ ˌhaɪ drəˌfɔr məˈleɪ ʃən /


the addition of a hydrogen atom and the formyl group to a double bond of a hydrocarbon by reaction with a mixture of carbon monoxide and hydrogen in the presence of a catalyst.

Origin of hydroformylation

First recorded in 1945–50; hydro-2 + formyl + -ation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019