pneumococcus
Definition
Noun: A type of spherical bacterium (Streptococcus pneumoniae) that is a common cause of pneumonia, as well as other infections like meningitis and sinusitis, in humans. Historically, it was first identified through its ability to cause pneumonia in mice.
Usage
The word "pneumococcus" is a scientific term used primarily in medical and biological contexts to refer to the specific bacterium. It is often discussed in relation to disease, vaccines, and antibiotic resistance.
Examples
- The doctor explained that the child's ear infection was caused by pneumococcus.
- The pneumococcus bacterium has developed resistance to several common antibiotics.
- Laboratory tests confirmed the presence of pneumococcus in the patient's sputum sample.
Advanced Usage
- As a taxonomic reference: The term is used in scientific literature to discuss the organism's characteristics, genetics, and pathogenesis. (e.g., "The polysaccharide capsule of the pneumococcus is its primary virulence factor.")
- In public health: Frequently appears in discussions about vaccination programs, such as the pneumococcal conjugate vaccine (PCV). (e.g., "Widespread vaccination has reduced invasive pneumococcus disease in children.")
Variants and Related Words
- Pneumococcal (adjective): Describing anything related to the pneumococcus bacterium.
- Example: "She received a pneumococcal vaccine to prevent pneumonia."
- Streptococcus pneumoniae: The formal, scientific name for the pneumococcus.
Synonyms
- (formal synonym)
- Pneumococcal bacterium
Notes on Meaning
The term specifically denotes the bacterium itself. While it is the causative agent of pneumococcal pneumonia, the word "pneumococcus" does not mean "pneumonia"; it means the cause of pneumonia.
Noun
-
bacterium causing pneumonia in mice and humans
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