PATHOGEN

pathogen

(noun) any disease-producing agent (especially a virus or bacterium or other microorganism)

Source: WordNet® 3.1

Etymology

Noun

pathogen (plural pathogens)

(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.

Anagrams

• heptagon, phone tag

Source: Wiktionary