Associations to the word «Tetrapyrrole»
Noun
Verb
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Wiktionary
TETRAPYRROLE, noun. (biochemistry) any of several natural pigments having a structure of four pyrrole rings connected by a one-carbon unit
Wise words
Language is a process of free creation; its laws and
principles are fixed, but the manner in which the principles
of generation are used is free and infinitely varied. Even
the interpretation and use of words involves a process of
free creation.