Found 2 items, similar to mycobacterium tuberculosis.
English → English (WordNet) Definition: Mycobacterium tuberculosis Mycobacterium tuberculosis n : cause of tuberculosis [syn: tubercle bacillus]
English → English (gcide) Definition: Mycobacterium tuberculosis Tubercle \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] Tuberculosis \Tu*ber`cu*lo"sis\, n. [NL. See Tubercle.] (Med.) A constitutional disease caused by infection with Mycobacterium tuberculosis (also called the Tubercle bacillus ), characterized by the production of tubercles in the internal organs, and especially in the lungs, where it constitutes the most common variety of pulmonary phthisis (consumption). The Mycobacteria are slow-growing and without cell walls, and are thus not affected by the beta-lactam antibiotics; treatment is difficult, usually requiring simultaneous administration of multiple antibiotics to effect a cure. Prior to availability of antibiotic treatment, the cure required extensive rest, for which special sanatoriums were constructed. [1913 Webster +PJC]