spirillum

spi·ril·lum  (sp-rlm)

n. pl. spi·ril·la (-rl)

1. Any of various aerobic bacteria of the genus Spirillum, having an elongated spiral form and bearing a tuft of flagella.

2. Any of various other spiral-shaped microorganisms.

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[New Latin Sprillum, genus name, diminutive of Latin spra, coil; see spire².]

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spirillum  (sp-rlm)

Plural spirilla

Any of various bacteria that are shaped like a spiral, such as the spirochete Treponema pallidum, which causes syphilis.

Thesaurus

Noun	1.	spirillum - spirally twisted elongate rodlike bacteria usually living in stagnant water eubacteria, eubacterium, true bacteria - a large group of bacteria having rigid cell walls; motile types have flagella genus Spirillum - a genus of bacteria ratbite fever bacterium, Spirillum minus - a bacterium causing ratbite fever
	2.	spirillum - any flagellated aerobic bacteria having a spirally twisted rodlike form spirilla eubacteria, eubacterium, true bacteria - a large group of bacteria having rigid cell walls; motile types have flagella