tu·ber·cle /ˈt(j)ubɝkəl/ 名詞
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.
n 1: a swelling that is the characteristic lesion of tuberculosis
2: small rounded wartlike protuberance on a plant [syn: nodule]
3: a protuberance on a bone especially for attachment of a
muscle or ligament [syn: tuberosity, eminence]