Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

gramicidin

play
noun gram·i·ci·din \ˌgra-mə-ˈsī-dən\

Definition of gramicidin

  1. :  any of several toxic crystalline polypeptide antibiotics produced by a soil bacterium (Bacillus brevis) and used against gram-positive bacteria in local infections



Origin and Etymology of gramicidin

gram-positive + -i- + -cide + 1-in


First Known Use: 1940


Medical Dictionary

gramicidin

play
noun gram·i·ci·din \ˌgram-ə-ˈsīd-ən\

Medical Definition of gramicidin

  1. :  an antibacterial mixture produced by a soil bacterium of the genus Bacillus (B. brevis) and used topically against gram-positive bacteria in local infections especially of the eye




Learn More about gramicidin


Seen and Heard

What made you want to look up gramicidin? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to proceed clumsily or ineffectually

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

lavender-fields-in-france

Which of these is a synonym of caesura?

rebellion interruption torrent megillah
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ