Meaning of hydroformylation

hy•dro•for•myl•a•tion

Pronunciation: (hī"dru-fôr"mu-lā'shun), [key]
— n.
  1. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.