Search Result for "antibiotic": 
Wordnet 3.0

NOUN (1)

1. a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections;
- Example: "when antibiotics were first discovered they were called wonder drugs"
[syn: antibiotic, antibiotic drug]


ADJECTIVE (1)

1. of or relating to antibiotic drugs; 



The Collaborative International Dictionary of English v.0.48:

antibiotic \an`ti*bi*ot"ic\ n.
   1. A chemical substance derived from a mold or bacterium that
      kills microorganisms and cures infections.

   Syn: wonder drug
        [WordNet 1.5]

   2. any chemical substance having therapeutically useful
      antibacterial or antifungal activity; -- used commonly but
      loosely for synthetic as well as natural antimicrobial
      agents.
      [PJC]


The Collaborative International Dictionary of English v.0.48:

antibiotic \antibiotic\ adj.
   1. of or pertaining to an antibiotic.
      [WordNet 1.5]

   2. having antimicrobial activity; capable of killing
      microbes.
      [PJC] -- antibiotically, n.
      [1913 Webster]


WordNet (r) 3.0 (2006):

antibiotic
    adj 1: of or relating to antibiotic drugs
    n 1: a chemical substance derivable from a mold or bacterium
         that can kill microorganisms and cure bacterial infections;
         "when antibiotics were first discovered they were called
         wonder drugs" [syn: antibiotic, antibiotic drug]