tetracycline

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noun tet·ra·cy·cline \ˌte-trə-ˈsī-ˌklēn, -klən\

Definition of tetracycline

  1. :  a yellow crystalline broad-spectrum antibiotic C22H24N2O8 produced by streptomyces or synthetically; also :  any of several chemically related antibiotics (such as doxycycline)

Recent Examples of tetracycline from the Web

  • Doctors are discouraging you from running out and loading up with antibiotics, but new research shows that two specific types of antibiotics — tetracyclines and quinolones — appear to be effective in lowering the risk of heart disease.

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tetracycline'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Did You Know?

Most chemical names are made up of two or more Greek and Latin roots strung together. Thus, tetracycline, with its cycl- root from the Greek word for "circle", means "four-ringed"—that is, "consisting of four fused hydrocarbon rings". Antibiotics work against bacteria and other tiny organisms (but not viruses); tetracycline, which comes from a kind of soil bacteria, is one of the most used of the antibiotics. "Broad-spectrum" antibiotics work well on numerous organisms; thus, tetracycline has proved effective against acne, chlamydia, cholera, rickets, and various lung and eye infections, among many other conditions.

Origin and Etymology of tetracycline

International Scientific Vocabulary tetracyclic having four fused hydrocarbon rings + 2-ine


First Known Use: 1952


Medical Dictionary

tetracycline

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noun tet·ra·cy·cline \ˌte-trə-ˈsī-ˌklēn, -klən\

Medical Definition of tetracycline

  1. :  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 C22H24N2O8·HCl; also :  any of several chemically related antibiotics (as doxycycline)


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