spirillum
/'spairiləm/
Definition
- Noun:
- A type of bacteria: A spirillum is any of various flagellated, aerobic bacteria that have a rigid, helically twisted rodlike shape.
- A bacterial shape: The term also refers to the characteristic spiral or corkscrew form of these bacteria, which are often found in stagnant water.
Examples of Usage
- Noun:
- Under the microscope, the scientist observed a spirillum moving rapidly due to its flagella.
- Spirillum volutans is a large, well-known species of this bacterial genus.
- The water sample from the pond contained several spirillum among other microorganisms.
Advanced Usage
- Scientific Classification: In taxonomy, "Spirillum" (capitalized) is also a genus name within the family Spirillaceae.
- The bacterium was identified as belonging to the genus Spirillum.
Variants and Related Words
- Spirilla (n): The plural form of spirillum.
- The researcher studied the movement patterns of various spirilla.
- Spirillar (adj): Relating to or characteristic of spirilla.
- The infection was caused by a spirillar bacterium.
Synonyms
- Spiral bacterium: A descriptive synonym emphasizing the shape.
- Helical bacterium: A technical synonym referring to the helix-like form.
Related Terms (Not Phrasal Verbs or Idioms)
- Bacillus: A rod-shaped bacterium, contrasting with the spiral shape of a spirillum.
- Spirochete: Another type of spiral-shaped bacterium but with a flexible, undulating body, unlike the rigid spirillum.
Noun
-
any flagellated aerobic bacteria having a spirally twisted rodlike form
-
spirally twisted elongate rodlike bacteria usually living in stagnant water
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