Definition of tetracycline in English:

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Pronunciation: /ˌtɛtrəˈsʌɪkliːn/


Any of a large group of antibiotics with a molecular structure containing four rings.
  • These antibiotics are often obtained from bacteria of the genus Streptomyces.
Example sentences
  • This strain was resistant to methicillin, cephalothin, gentamicin, erythromycin, chloramphenicol and tetracycline.
  • Moderate acne is often successfully treated with a low-dose oral antibiotic, such as tetracycline or erythromycin.
  • He was treated with a six-month course of a tetracycline and made a slow and steady recovery.


1950s: from tetra- + cyclic + -ine4.

For editors and proofreaders

Line breaks: tetra|cyc¦line

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