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TUBERCLE - Definiția din dicționar

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Tu"ber*cle (?), n. [L. tuberculum, dim. of tuber: cf. F. tubercule, OF. also tubercle. See Tuber.]
[1913 Webster]

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.
[1913 Webster]

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.
[1913 Webster]

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.
[1913 Webster +PJC]