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tetracaine - a crystalline compound used in the form of a hydrochloride as a local anesthetic local anaesthetic, local anesthetic, topical anaesthetic, topical anesthetic, local - anesthetic that numbs a particular area of the body
Medical Definition of tetracycline. : a yellow crystalline broad-spectrum antibiotic that is produced by a soil actinomycete of the genus Streptomyces (S. viridifaciens) or made synthetically and that is administered chiefly in the form of its hydrochloride C22H24N2O8Â·HCl; also : any of several chemically related antibiotics (as doxycycline)