noun Pharmacology.

a crystalline, water-insoluble antibiotic obtained from tyrothrycin by extraction, used chiefly in treating local infections caused by Gram-positive organisms.

Origin of gramicidin

First recorded in 1935–40; Gram-(positive) + -i- + -cide + -in2
Also called gramicidin D. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for gramicidin


gramicidin D


an antibiotic used in treating local Gram-positive bacterial infections: obtained from the soil bacterium Bacillus brevis

Word Origin for gramicidin

C20: from Gram (-positive) + -cid (e) + -in
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

gramicidin in Medicine




An antibiotic produced by a Bacillis bacterium and used to treat certain gram-positive bacteria infections.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.