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tubercle bacillus

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noun
the bacterium, Mycobacterium tuberculosis, causing tuberculosis.
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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

Origin of tubercle bacillus

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use tubercle bacillus in a sentence

British Dictionary definitions for tubercle bacillus

tubercle bacillus

noun
a rodlike Gram-positive bacterium, Mycobacterium tuberculosis, that causes tuberculosis: family Mycobacteriaceae
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

Medical definitions for tubercle bacillus

tubercle bacillus

n.
The rod-shaped, gram-negative, aerobic bacterium Mycobacterium tuberculosis that causes tuberculosis.Koch's bacillus
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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