genus diplococcus
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Definition
Noun: A taxonomic category in biological classification, specifically a genus of bacteria characterized by cells that typically occur in pairs. The name refers to the cellular arrangement where two spherical or ovoid bacterial cells remain attached after division.
Usage
This term is used in scientific contexts, particularly in microbiology, taxonomy, and medicine, to classify and refer to a specific group of bacteria. - The laboratory report identified the pathogen as belonging to the genus Diplococcus. - Streptococcus pneumoniae was once classified under the genus Diplococcus.
Advanced Usage
- In Taxonomic History: The genus was historically used more broadly. Many species once placed in this genus have been reclassified into other genera (like ) based on genetic and biochemical analysis, though the term remains valid for some organisms.
- Descriptive Usage: The term can be used descriptively for the diplococcal shape (paired cocci) even when not referring to the formal genus, though this is less precise.
Variants and Related Words
- diplococcus (noun, lowercase): An individual bacterium or the paired cell form characteristic of this genus. (e.g., )
- Diplococcaceae (noun): The family name sometimes associated with this genus.
- diplococcal (adjective): Of or pertaining to the genus or the diplococcus form. (e.g., )
Synonyms
- Pair-forming cocci (descriptive term, not a taxonomic synonym)
- (Note: There are no direct taxonomic synonyms for a genus name. Older synonyms may exist in the literature, such as the previous classification of for the organism now called .)
Related Phrases / Terms
- Gram-positive diplococcus: A common descriptor in medical microbiology, often referring to the appearance of bacteria like under the microscope after Gram staining.
- Lancet-shaped diplococcus: A specific morphological description sometimes used for .
Noun
- a genus of bacteria