WordReference Random House Unabridged Dictionary of American English © 2026
pho•to•phos•pho•ryl•a•tion
(fō′tə fos′fər ə lā′shən),USA pronunciation n. [Biochem.]
- Biochemistryphosphorylation that utilizes light as a source of energy, as in the formation of ATP from ADP and phosphorus during photosynthesis.
- photo- + phosphorylation 1955–60