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Definition of Polyoxin
1. Noun. (biochemistry) Any of a group of nucleoside antibiotics, produced by ''Streptomyces'' bacteria, composed of heterocyclic moieties derived from amino sugars; the simplest being ''1-?-(5'-amino5'-deoxy-D-allofuranuronosyl)-5-hydroxy-methyluracil'' ¹
¹ Source: wiktionary.com