|filō+ noun
Etymology: International Scientific Vocabulary phyll- + porphyrin; probably originally formed in German
: a dark red crystalline porphyrin C 20 H 6 N 4 (CH 3 ) 5 (C 2 H 5 ) 2 CH 2 CH 2 COOH with a violet luster obtained by degradation of chlorophyll or pheophytin