porfimer sodium
noun
por·fi·mer sodium
| \ ˈpȯr-fə-mər-
\
\
Medical Definition of porfimer sodium
: a photosensitizing mixture of porphyrin oligomers that is administered by intravenous injection to induce photosensitivity in tumor cells (as of esophageal carcinoma) before subjecting them to laser light in photodynamic therapy — see photofrin