tetracycline
tet·ra·cyc·line
noun
1.
an antibiotic (trade name Achromycin) derived from microorganisms of the genus Streptomyces and used broadly to treat infections
Origin
From tetracyclic + -ine.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.