any of several spirally twisted, aerobic bacteria of the genus Spirillum, certain species of which are pathogenic for humans.
any of various similar microorganisms.
- spi·ril·lar, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use spirillum in a sentence
The same takes place with the spirilla of recurrent typhus and the microbe of erysipelas.
Each spirilla is animated by the life-force of a plane, and four are at present normally active, one for each round.Occult Chemistry | Annie Besant and Charles W. Leadbeater
Thus we recognise those that are globular—cocci; those that resemble a rod—bacilli; the spiral or wavy forms—spirilla.Manual of Surgery | Alexis Thomson and Alexander Miles
Spirilla are long, slender, thread-like cells, more or less spiral or wavy.Manual of Surgery | Alexis Thomson and Alexander Miles
Often these filaments are not straight, but spirally twisted, and are called "spirilla."More Science From an Easy Chair | Sir E. Ray (Edwin Ray) Lankester
British Dictionary definitions for spirillum
- spirillar, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for spirillum
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.