| Main Entry: | |
| Part of Speech: | noun |
| Definition: | bacteria |
| Synonyms: | bacillus, bacterium, bug*, crud, germ, microorganism, pathogen, plague, virus |
| Main Entry: | germ |
| Part of Speech: | noun |
| Definition: | microscopic organism, often causing illness |
| Synonyms: | antibody, bacterium, bug*, disease, microbe, microorganism, parasite, pathogen, plague, virus, what's going around |
| Main Entry: | microorganism |
| Part of Speech: | noun |
| Definition: | germ |
| Synonyms: | bacterium, bug*, disease, disease-causing agent, microbe, parasite, pathogen, plague, virus |
| Main Entry: | virus |
| Part of Speech: | noun |
| Definition: | bacterium, bug |
| Synonyms: | ailment, bacillus, disease, germ, illness, infection, microbe, microorganism, pathogen, sickness |
| Main Entry: | bacteria |
| Part of Speech: | noun |
| Definition: | microorganisms |
| Synonyms: | bacilli, germs, microbes, organisms, pathogens |