(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.

plural of pathogen

The quality or state of causing, originating or producing disease.

(pathology) Able to cause (harmful) disease. / (music) Consisting of harsh, percussive, nonverbal sounds.

In a pathogenic manner.

plural of pathogene

Dated form of pathogen.

plural of pathogenicity

pathogenic; causing disease

Alternative form of pathogenic