Of, relating to, or being a bacterium that retains the violet stain used in Gram's method.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "gram-positive" in a sentence
"Such organisms are so named because they don't pick up the purplish dye used in the test to distinguish them from gram-positive bacteria."
"Zyvox is the leading branded antibiotic for serious gram-positive infections, and the only marketed antibiotic labeled for MRSA that is available in both intravenous and oral-dosage forms."
"MRSA is the most prevalent drug-resistant bacterium classified as gram-positive found in hospital and community settings."