Standard Lemma guide

eubacterium

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

Any bacterium considered to be within the obsolete taxonomic subkingdom Eubacteria.

Definition source: English Wiktionary via Wiktextract

Topics: biology, microbiology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a large group of bacteria having rigid cell walls; motile types have flagella

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: eubacteria, true bacteria

Antonyms: none provided

Broader terms: moneran, moneron, bacteria, bacterium

Narrower terms: bacillus, B, coccus, cocci, coccobacillus, spirillum, spirilla, clostridium, clostridia, botulinus, botulinum, Clostridium botulinum, clostridium perfringens, cyanobacteria, blue-green algae, phototrophic bacteria, phototropic bacteria, pseudomonad, xanthomonad, nitric bacteria, nitrobacteria, nitrosobacteria, nitrous bacteria, thiobacillus, vibrio, vibrion, corynebacterium, listeria, enteric bacteria, enterobacteria, enterics, entric, endospore-forming bacteria, rickettsia, chlamydia, mycoplasma, actinomycete, actinomyces, mycobacteria, mycobacterium, myxobacteria, myxobacterium, myxobacter, gliding bacteria, slime bacteria, lactobacillus, streptococcus, streptococci, strep, spirochete, spirochaete

History

Etymology

Etymology tree Proto-Indo-European *h1wes- Proto-Indo-European *-us Proto-Indo-European *h1wésus? Proto-Indo-European *h1es-? Proto-Indo-European *h1su- Proto-Hellenic *ehu- Ancient Greek ἐΰς (eǘs) Ancient Greek εὖ (eû)der. English eu- Ancient Greek βακτηρία (baktēría) Proto-Indo-European *-yósder. Ancient Greek -ῐος (-ĭos)? Ancient Greek -ιον (-ion) Ancient Greek βακτήριον (baktḗrion)bor. New Latin bactēriumbor. English bacterium English eubacterium From eu- + bacterium.