spirillum
noun
any of several spirally twisted, aerobic bacteria of the genus Spirillum, certain species of which are pathogenic for humans.
spirilla
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pluralof spirillum.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Examination of the blood prior to the invasion does not discover any spirilla.
From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various
The photographs included cells containing anthrax, typhoid and tubercle bacilli, the spirilla of relapsing fever, specimens from cases of anthrax.
From Alcohol: A Dangerous and Unnecessary Medicine, How and Why What Medical Writers Say by Martha Meir Allen
Then we have spiro-bacteria, the spirilla and the spirochetæ; the former having short open spirals, the latter long and closely wound spirals.
From Scientific American Supplement, No. 787, January 31, 1891 by Various
They consist of cells, single or grouped, which when spherical are called cocci, when rod-shaped, bacilli, when spiral, spirilla.
From Essays In Pastoral Medicine by Austin ?Malley
He asserts that examinations of the blood during such post-critical febrile rebounds invariably showed an absence of spirilla, so that in his opinion such fever must be considered non-specific.
From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various
