

pathogen
Meanings
Related Words
pathogens noun
/ˈpæθədʒənz/ /ˈpæθəˌdʒɛnz/
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.
protozoa noun
/ˌproʊtəˈzoʊə/ /ˌproʊtəˈzoʊˌɑː/