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Definition of Tetrapyrrole
1. Noun. (biochemistry) any of several natural pigments having a structure of four pyrrole rings connected by a one-carbon unit ¹
¹ Source: wiktionary.com
Definition of Tetrapyrrole
1. [n -S]
Medical Definition of Tetrapyrrole
1. A molecule containing four pyrrole nuclei; e.g., porphyrin. (05 Mar 2000)