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Definition of Pathogen
1. Noun. Any disease-producing agent (especially a virus or bacterium or other microorganism).
Generic synonyms: Micro-organism, Microorganism, Infectious Agent, Infective Agent
Derivative terms: Pathogenic
Derivative terms: Pathogenic
Definition of Pathogen
1. Noun. (context: pathology immunology) Any organism or substance, especially a microorganism, capable of causing disease, such as bacteria, viruses, protozoa or fungi. Microorganisms are not considered to be pathogenic until they have reached a population size that is large enough to cause disease. ¹
¹ Source: wiktionary.com
Definition of Pathogen
1. any disease-producing organism [n -S]
Medical Definition of Pathogen
1.