Pathogen

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Pathogen \Path"o*gen\, Pathogene \Path"o*gene\, n. [See
     {Pathogenic}.] (Biol.)
     Any microorganism which causes disease; a pathogenic
     organism; an infectious microorganism; a bacterium, virus, or
     other agent which can cause disease by infection; -- opposed
     to {zymogene}. The spelling pathogene is now archaic.


     [1913 Webster + PJC]

From WordNet (r) 2.0 [wn]:

  pathogen
       n : any disease-producing agent (especially a virus or bacterium
           or other microorganism)

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  37 Moby Thesaurus words for "pathogen":
     adenovirus, aerobe, aerobic bacteria, amoeba, anaerobe,
     anaerobic bacteria, bacillus, bacteria, bacterium, bug, coccus,
     disease-producing microorganism, echovirus, enterovirus,
     filterable virus, fungus, germ, gram-negative bacteria,
     gram-positive bacteria, microbe, microorganism, mold,
     nonfilterable virus, picornavirus, protozoa, protozoon, reovirus,
     rhinovirus, rickettsia, spirillum, spirochete, spore,
     staphylococcus, streptococcus, trypanosome, vibrio, virus