Word Type

Noun

The word "bacterium" can be used as a noun.

Word Relationships

Derived Terms

Hansen’s bacterium agrobacterium archaebacterium archebacterium bacterial bactericidal bactericide bacteriologist bacteriology bacteroid betaproteobacterium blue-green bacterium cyanobacterium diplobacterium endobacterium enterobacterium epibacterium eubacterium green bacterium halobacterium heliobacterium iron bacterium macrobacterium megabacterium microbacterium mirror bacterium mycobacterium nanobacterium nitrobacterium phosphobacterium photobacterium phytobacterium probacterium purple sulfur bacterium rhizobacterium spirobacterium streptobacterium sulfur bacterium sulphur bacterium ultramicrobacterium urobacterium

Context

microbiology

Broader Terms (Hypernyms)

micro-organism microorganism prokaryote

Narrower Terms (Hyponyms)

ascococcus bacillus cryptococcus cytococcus diplococcus echinococcus enterococcus gonococcus lactobacillus meningococcus micrococcus ovococcus pneumococcus protococcus spermococcus spirochete staphylococcus streptococcus

Type Of (IsA)

monera prokaryote prokaryotic organism

Related Terms

bacillus coccus

Related Terms

bacillus cell walls nucleus organelles organism single celled

Synonym Network

bacteria

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.