| 释义 |
tubercle
tu·ber·cle T0399900 (to͞o′bər-kəl, tyo͞o′-)n.1. A small rounded projecting part or outgrowth, such as a wartlike excrescence on the roots of some leguminous plants or a knoblike process in the skin or on a bone.2. Medicine A nodule or swelling, especially a mass of lymphocytes and epithelioid cells forming the characteristic lesion of tuberculosis.
[Latin tūberculum, diminutive of tūber, lump; see tuber.]tubercle (ˈtjuːbəkəl) or tuberculumn1. (Botany) any small rounded nodule or elevation, esp on the skin, on a bone, or on a plant2. (Pathology) any small rounded pathological lesion of the tissues, esp one characteristic of tuberculosis[C16: from Latin tūberculum a little swelling, diminutive of tuber]tu•ber•cle (ˈtu bər kəl, ˈtyu-)
n. 1. a small rounded projection or excrescence, as on a bone or on the surface of the body. 2. a. a small, firm, rounded nodule or swelling. b. such a swelling as the characteristic lesion of tuberculosis. 3. a tuberlike swelling or nodule on a plant. [1570–80; < Latin tūberculum. See tuber1, -cle1] tu·ber·cle (to͞o′bər-kəl) A small rounded projection or swelling, as on the roots of legumes or on skin or a bone.Thesaurus| Noun | 1. |  tubercle - a swelling that is the characteristic lesion of tuberculosislesion - any localized abnormal structural change in a bodily part | | 2. |  tubercle - small rounded wartlike protuberance on a plantnoduleplant process, enation - a natural projection or outgrowth from a plant body or organ | | 3. |  tubercle - a protuberance on a bone especially for attachment of a muscle or ligamenttuberosity, eminencedeltoid eminence, deltoid tuberosity - a bump on the outside of the humerus where the deltoid muscle attachesappendage, outgrowth, process - a natural prolongation or projection from a part of an organism either animal or plant; "a bony process" |
Translationstubercle
tubercle (to͞o`bərkyo͞ol') [Lat.,=little swelling], small, usually solid, nodule or prominence. In anatomy the term is applied to natural prominences in certain muscles, to nerve nuclei of the central nervous system, and to eminences on bones, especially in regions where muscles (through tendons) or bones (through ligaments) are attached. In dentistry tubercle refers to the cusp of a tooth. In pathology it describes small morbid growths, particularly the lesions of tuberculosistuberculosis
(TB), contagious, wasting disease caused by any of several mycobacteria. The most common form of the disease is tuberculosis of the lungs (pulmonary consumption, or phthisis), but the intestines, bones and joints, the skin, and the genitourinary, lymphatic, and
..... Click the link for more information. . In botany it applies to the nodules on the roots or leaves of plants. In entomology the term is used for a compound or supplementary eye and for the nodules on the bodies of certain insects.tubercle[′tü·bər·kəl] (biology) A small knoblike prominence. (metallurgy) A mound of corrosive products on the surface of a metal that is subjected to local corrosive attack. tubercle1. any small rounded nodule or elevation, esp on the skin, on a bone, or on a plant 2. any small rounded pathological lesion of the tissues, esp one characteristic of tuberculosis tubercle
tubercle [too´ber-k'l] 1. a nodule or small eminence, especially one on a bone, for attachment of a tendon; see also tuber and tuberosity. Called also tuberculum. adj., adj tuber´cular, tuber´culate.2. a small, rounded nodule produced by the bacillus of tuberculosis (Mycobacterium tuberculosis). It is made up of small spherical cells that contain giant cells and are surrounded by spindle-shaped epithelioid cells.fibrous tubercle a tubercle of bacillary origin that contains connective tissue elements.Ghon tubercle Ghon focus.mental tubercle a prominence on the inner border of either side of the mental protuberance of the mandible.miliary tubercle one of the many minute tubercles formed in many organs in acute miliary tuberculosis.pubic tubercle a prominent tubercle at the lateral end of the pubic crest.supraglenoid tubercle one on the scapula for attachment of the long head of the biceps muscle.tu·ber·cle (tū'bĕr-kĕl), 1. A nodule, especially in an anatomic, not pathologic, sense. 2. A circumscribed, rounded, solid elevation on the skin, mucous membrane, surface of an organ, or the surface of a bone, the latter giving attachment to a muscle or ligament. 3. dentistry a small elevation arising on the surface of a tooth. Synonym(s): tuberculum [TA]4. A granulomatous lesion due to infection by Mycobacterium tuberculosis. Although somewhat variable in size (0.5-3 mm in diameter) and in the proportions of various histologic components, tubercle's tend to be fairly well circumscribed, spheroid, firm lesions that usually consist of three irregularly outlined but moderately distinct zones: 1) an inner focus of necrosis, coagulative at first, which then becomes caseous; 2) a middle zone that consists of a fairly dense accumulation of large mononuclear phagocytes (macrophages), frequently arranged somewhat radially (with reference to the necrotic material) resembling an epithelium, and hence termed epithelioid cells; multinucleated giant cells of Langhans type may also be present; and 3) an outer zone of numerous lymphocytes, and a few monocytes and plasma cells. In instances in which healing has begun, a fourth zone of fibrous tissue may form at the periphery. Morphologically indistinguishable lesions may occur in diseases caused by other agents; many observers use the term nonspecifically, that is, with reference to any such granuloma; other clinicians use tubercle only for tuberculous lesions, and then designate those of undetermined causes as epithelioid-cell granulomas. [L. tuberculum, dim. of tuber, a knob, a swelling, a tumor] tubercle (to͞o′bər-kəl)n.1. An anatomical nodule.2. A small elevation on the surface of a tooth.3. A nodule or swelling, especially a mass of lymphocytes and epithelioid cells forming the characteristic granulomatous lesion of tuberculosis.tubercle Medtalk Bump, lump, nodule, protuberance, especially on a bonetu·ber·cle (tū'bĕr-kĕl) 1. A nodule, especially in an anatomic, not pathologic, sense.
Synonym(s): tuberculum (1) [TA] . 2. A circumscribed, rounded, solid elevation on the skin, mucous membrane, or surface of an organ. 3. A slight elevation from the surface of a bone giving attachment to a muscle or ligament. 4. dentistry A small elevation arising on the surface of a tooth. 5. A granulomatous lesion due to infection by Mycobacterium tuberculosis. Although somewhat variable in size (0.5-3 mm in diameter) and in the proportions of various histologic components, tubercles tend to be fairly well-circumscribed, spheroid, firm lesions that usually consist of three zones: 1) an inner focus of necrosis, coagulative at first and then becoming caseous; 2) a middle zone that consists of large mononuclear phagocytes (macrophages), frequently arranged somewhat radially (with reference to the necrotic material), resembling an epithelium and hence termed epithelioid cells; multinucleated giant cells of Langhans type may also be present; and 3) an outer zone of numerous lymphocytes and a few monocytes and plasma cells. In instances in which healing has begun, a fourth zone of fibrous tissue may form at the periphery. Morphologically indistinguishable lesions may occur in diseases caused by other agents; many observers use the term nonspecifically, i.e., with reference to any such granuloma; others use "tubercle" only for tuberculous lesions and designate those of undetermined causes as epithelioid-cell granulomas. [L. tuberculum, dim. of tuber, a knob, a swelling, a tumor]tubercle 1. A small nodular mass of tubercular tissue. 2. An informal term for TUBERCULOSIS. 3. Any small, rounded protrusion on a bone. tubercle a spherical or ovoid swelling.tu·ber·cle (tū'bĕr-kĕl) 1. [TA] In dentistry, a small elevation arising on the surface of a tooth. 2. [TA] A nodule, especially in an anatomic, not pathologic, sense. 3. Circumscribed, rounded, solid elevation on skin, mucous membrane, surface of an organ, or bone surface, the last giving attachment to a muscle or ligament. 4. A granulomatous lesion due to infection by Mycobacterium tuberculosis. [L. tuberculum, dim. of tuber, a knob, a swelling, a tumor]tubercle
Related to tubercle: tubercle bacillus, Conoid tubercle, Lesser tubercle, Pharyngeal tubercleSynonyms for tuberclenoun a swelling that is the characteristic lesion of tuberculosisRelated Wordsnoun small rounded wartlike protuberance on a plantSynonymsRelated Wordsnoun a protuberance on a bone especially for attachment of a muscle or ligamentSynonymsRelated Words- deltoid eminence
- deltoid tuberosity
- appendage
- outgrowth
- process
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