Associations to the word «Tetrapyrrole»

Wiktionary

TETRAPYRROLE, noun. (biochemistry) any of several natural pigments having a structure of four pyrrole rings connected by a one-carbon unit

Wise words

Words to me were magic. You could say a word and it could conjure up all kinds of images or feelings or a chilly sensation or whatever. It was amazing to me that words had this power.
Amy Tan