Definition of "tetracycline" in Englisch

noun

1. (pharmacology, uncountable) A yellow crystalline broad-spectrum antibiotic C₂₂H₂₄N₂O₈ produced by streptomyces or synthetically.

2. (pharmacology, countable) Any of a large group of antibiotics with the same general structure derived from tetracene with many hydroxyl and other groups.