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spirillum

(spī ril′əm)

noun pl. spirilla

any of a genus (Spirillum) of bacteria having the form of a spiral thread and characterized by flagella
any of various similar microorganisms

Origin: ModL, dim. of L spira: see spire

See spirillum in American Heritage Dictionary 4

noun pl. spi·ril·la (-rĭlˈə)

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

Origin:

Origin: New Latin Spīrillum, genus name

Origin: , diminutive of Latin spīra, coil; see spire²

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