Definition of tubercle bacillus in US English:

tubercle bacillus


  • A bacterium that causes tuberculosis.

    • ‘Prevention, through public-health measures, including antispitting ordinances and the disposal of infected milk and meat, became a first line of defense after Koch identified the tubercle bacillus in 1882.’
    • ‘A human being cannot contract tuberculosis without being exposed to the tubercle bacillus.’
    • ‘Depending on concentration, iodophors have a wide range of activity against gram-positive and gram-negative bacteria, tubercle bacillus, fungi, and viruses and some activity against bacterial spores.’
    • ‘Koch correctly surmised that the tubercle bacillus was surrounded by a ‘special wall of unusual properties.’’
    • ‘Tuberculosis is an infection caused by a germ called the tubercle bacillus or Mycobacterium tuberculosis.’