• WordNet 3.6
    • n spirillum any flagellated aerobic bacteria having a spirally twisted rodlike form
    • n spirillum spirally twisted elongate rodlike bacteria usually living in stagnant water
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Webster's Revised Unabridged Dictionary
    • n Spirillum (Biol) A genus of common motile microörganisms (Spirobacteria) having the form of spiral-shaped filaments. One species is said to be the cause of relapsing fever.
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Century Dictionary and Cyclopedia
    • n spirillum A genus or form-genus of Schizomycetes or bacteria, having cylindrical or somewhat compressed spirally twisted cells. They are rigid and furnished at each end with a cilium, and multiply by transverse division, the parts soon separating from one another. This genus, which according to some authorities also embraces the genus known as Vibrio, contains many species, found in swamp-water, salt water, infusions, etc. See Schizomycetes.
    • n spirillum A bacterium of the genus Spirillum.
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Chambers's Twentieth Century Dictionary
    • n Spirillum spī-ril′um a genus of bacteria with cylindrical spirally twisted cells
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Webster's Revised Unabridged Dictionary
NL., dim. of L. spira, a coil


In literature:

For the tick that carries the spirillum is blind and cannot climb any smooth surface.
"Sketches of the East Africa Campaign" by Robert Valentine Dolbey
They are actually the swimming organs of this Spirillum.
"Scientific American Supplement, Vol. XIX, No. 470, Jan. 3, 1885" by Various
The same is true of Schizomycetes, to which all the bacteria, bacillus, spirillum, and vibrio, and a number of other groups belong.
"The Mushroom, Edible and Otherwise" by M. E. Hard
Relapsing fever, or famine fever, caused by Obermeier's {180} spirillum, is sometimes associated with typhus.
"Essays In Pastoral Medicine" by Austin ÓMalley
"A System of Practical Medicine by American Authors, Vol. I" by Various