Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary
1

antibiotic

play
adjective an·ti·bi·ot·ic \ˌan-tē-bī-ˈä-tik, -ˌtī-; -bē-ˈä-\

Definition of antibiotic

  1. 1 :  tending to prevent, inhibit, or destroy life

  2. 2 :  of or relating to antibiotics or to antibiosis

an·ti·bi·ot·i·cal·lyplay \-ti-k(ə-)lē\ adverb


1891

First Known Use of antibiotic

1891

Rhymes with antibiotic


2

antibiotic

noun an·ti·bi·ot·ic

Simple Definition of antibiotic

  • medical : a drug that is used to kill harmful bacteria and to cure infections

Full Definition of antibiotic

  1. :  a substance produced by or a semisynthetic substance derived from a microorganism and able in dilute solution to inhibit or kill another microorganism

1943

First Known Use of antibiotic

1943



Seen and Heard

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

WORD OF THE DAY

February 7, 2016

a slight offense

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

kittly-benders spindrift duvet pince-nez
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ