noun, plural spi·ril·la [spahy-ril-uh] /spaɪˈrɪl ə/. Bacteriology.
any of several spirally twisted, aerobic bacteria of the genus Spirillum, certain species of which are pathogenic for humans.
any of various similar microorganisms.
Origin of spirillum
1870–75;Related formsspi·ril·lar, adjective
< New Latin,
equivalent to Latin spīr(a
) (see spire2
) + -illum
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for spirilla
Historical Examples of spirilla
British Dictionary definitions for spirilla
noun plural -la (-lə)
Derived Formsspirillar, adjective
any bacterium of the genus Spirillum, such as S. minus, which causes ratbite fever
Word Origin for spirillum
C19: from New Latin, literally: a little coil, from spīra a coil
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for spirilla
(plural spirilla), 1875, Modern Latin, diminutive of Latin spira (see spiral (adj.)). So called for their structure.
Online Etymology Dictionary, © 2010 Douglas Harper
n. pl. spi•ril•la (-rĭl′ə)
A member of the genus Spirillum.
Any of various other spiral-shaped microorganisms.
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.
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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.