WordReference Random House Unabridged Dictionary of American English © 2026
hy•dro•for•myl•a•tion
(hī′drə fôr′mə lā′shən),USA pronunciation n.
- Chemistrythe 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.
- hydro-2 + formyl + -ation 1945–50