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Tubercle bacillus   Listen
noun
Tubercle  n.  
1.
A small knoblike prominence or excrescence, whether natural or morbid; as, a tubercle on a plant; a tubercle on a bone; the tubercles appearing on the body in leprosy.
2.
(Med.) A small mass or aggregation of morbid matter; especially, the deposit which accompanies scrofula or phthisis. This is composed of a hard, grayish, or yellowish, translucent or opaque matter, which gradually softens, and excites suppuration in its vicinity. It is most frequently found in the lungs, causing consumption.
Tubercle bacillus (Med.), a minute vegetable organism (Mycobacterium tuberculosis, formerly Bacillus tuberculosis, and also called Koch's bacillus) discovered by Koch, a German physician, in the sputum of consumptive patients and in tuberculous tissue. It is the causative agent of tuberculosis.





Collaborative International Dictionary of English 0.48


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"Tubercle bacillus" Quotes from Famous Books



... amount of "close-range" work is rapidly manufacturing myopic eyes; if bad ventilation, whether due to faulty construction or to faulty management, is preparing soil for the tubercle bacillus; if children with contagious diseases are not found and segregated; if desks are so ill adapted to children's sizes and physical needs that they are forming crooked spines; if too many children are crowded into one room; if lack of air and light is producing strained eyes and malnutrition; ...
— Civics and Health • William H. Allen


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