[dok-see-sahy-kleen, -klin]
noun Pharmacology.
  1. a synthetic analog of a broad-spectrum antibiotic tetracycline drug, C22H24N2O8, used against a wide range of susceptible Gram-positive and Gram-negative organisms.

Origin of doxycycline

contraction of deoxytetracycline Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for doxycycline


  1. a tetracycline antibiotic used to treat conditions caused by a wide range of bacteria, including anthrax
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

doxycycline in Medicine


[dŏk′sĭ-sīklēn′, -klĭn]
  1. An antibacterial derived from tetracycline.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.