Wiktionary
porphyrins
n. (plural of porphyrin English)
Usage examples of "porphyrins".
Cellulose, polypeptides, carotenoids, and porphyrins could be transformed to sugars, starches, proteins, and edible fats.
The buildup of toxic levels of these porphyrins in the bloodstream and urine produced a number of unpleasant side effects.