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spirilla

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Spirilla
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spi⋅ril⋅lum

  [spahy-ril-uhm]
Use spirilla in a Sentence
–noun, plural -ril⋅la  [-ril-uh] . Bacteriology.
1. any of several spirally twisted, aerobic bacteria of the genus Spirillum, certain species of which are pathogenic for humans.
2. any of various similar microorganisms.
Origin:
1870–75; < NL, equiv. to L spīr(a) (see spire 2 ) + -illum dim. suffix

Related forms:
spi⋅ril⋅lar, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Spirilla
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spi·ril·lum   (spī-rĭl'əm)   
n.   pl. spi·ril·la (-rĭl'ə)

  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.


[New Latin Spīrillum, genus name, diminutive of Latin spīra, coil; see spire2.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: spi·ril·lum
Pronunciation: spI-'ril-&m
Function: noun
1 capitalized : a genus of gram-negative bacteriacomprising elongated forms having tufts of flagella at both poles and usually living in stagnant water rich in organic matter —see RAT-BITE FEVER b
2 plural spi·ril·la /-'ril-&/ : any bacterium of the genus Spirillum
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

Spirillum n.
A genus of large, aerobic, gram-negative bacteria having an elongated spiral form and a tuft of flagella.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
spirillum   (spī-rĭl'əm)  Pronunciation Key 
Plural spirilla
Any of various bacteria that are shaped like a spiral, such as the spirochete Treponema pallidum, which causes syphilis.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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