Definition

1. Noun:
   • A large group of bacteria having rigid cell walls; motile types have flagella: This term refers to the domain of true bacteria, which are prokaryotic microorganisms. They are characterized by a simple cellular structure without a nucleus and possess a rigid cell wall. This group includes the vast majority of familiar bacteria, both beneficial and pathogenic.

Usage Examples

• Noun:
  • E. coli and Streptococcus are common examples of eubacteria.
  • Scientists study the genetics of eubacteria to understand antibiotic resistance.
  • The domain Eubacteria is distinct from Archaea, another major group of prokaryotes.

Advanced Usage

• Scientific Classification: The term "Eubacteria" (often capitalized) is used in biological taxonomy to denote one of the three domains of life, alongside Archaea and Eukarya. In modern classification, the term "Bacteria" is often used synonymously with this group.
  • The tree of life divides cellular organisms into Eubacteria, Archaea, and Eukaryotes.

Variants and Related Words

• Eubacterium (n, singular): The singular form, referring to a single organism of this type.
  • This particular eubacterium is essential for digestion.
• Bacteria (n, plural): A common synonym for eubacteria in general, non-scientific language, though technically "Bacteria" is the formal domain name.
• Prokaryote (n): A broader biological term for organisms without a cell nucleus, which includes both eubacteria and archaea.

Synonyms

• True bacteria: A descriptive synonym emphasizing the distinction from archaea.
• Bacteria: The most common general synonym.

Related Terms (Not Phrasal Verbs or Idioms)

• Archaea: The other domain of prokaryotic life, distinguished from eubacteria by genetic and biochemical differences.
• Peptidoglycan: A key component of the rigid cell wall characteristic of eubacteria.
• Flagellum: A whip-like structure used for movement by many motile eubacteria.

Noun

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