| germ(noun, illness, unit, bug, egg) | |
| microbe(noun, illness, sickness, bug, plague) | |
| virus(noun, animal, creature, disease, bug) | |
| bacillus(noun, illness, sickness, germ, microorganism) | |
| bacteria(noun, disease, bug, mold, leaven) | |
| bug(noun, illness, sickness, plague, germ) | |
| microorganism(noun, unit, sickness, bug, plague) | |
| pathogen | |
| bacterial | |
| coccus | |
| fungus | |
| mold(noun, leaven) | |
| spore(noun, unit, egg, microorganism) | |
| acidophil | |
| amebic | |
| amoeba | |
| anaerobe | |
| antibody | |
| bacterias | |
| bacteriological |
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| APA | Smart Define. (2015). bacterium thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/bacterium/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "bacterium thesaurus" https://smartdefine.org/bacterium/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, bacterium thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/bacterium/thesaurus/synonyms>. |
| MLA | Smart Define. "bacterium thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/bacterium/thesaurus/synonyms> |