Definition of pathogen noun from the Oxford Advanced American Dictionary

 

pathogen

 noun
noun
NAmE//ˈpæθədʒən//
 
(technology)
 
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a thing that causes disease the spread of pathogens by insects
NAmE//ˌpæθəˈdʒɛnɪk//
 
adjective pathogenic organisms
See the Oxford Advanced Learner's Dictionary entry: pathogen