Meaning of photophosphorylation

pho•to•phos•pho•ryl•a•tion

Pronunciation: (fō"tu-fos"fur-u-lā'shun), [key]
— n. Biochem.
  1. phosphorylation that utilizes light as a source of energy, as in the formation of ATP from ADP and phosphorus during photosynthesis.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.