氧四环素 yǎngsìhuánsù oxytetracycline Origin Definitions Defs Strokes Stroke Words Sentences Sents 氧 yǎng noun oxygen oxygen; a colorless, odorless gas necessary for life and combustion四环素 四環素 sìhuánsù tetracycline A common broad-spectrum antibiotic extracted from the culture broth of certain bacteria in the genus Streptomyces