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ther instrument. Tripod of life, or Vital tripod (Physiol.), the three organs, the heart, lungs, and brain; -- so called because their united action is necessary to the maintenance of life.

ally softens, and excites suppuration in its vicinity. It is most frequently found in the lungs, causing consumption. Tubercle bacillus (Med.), a minute vegetable organism (Bacillus tuberculosis) discovered by Koch, a German physician, in the sputum of consumptive patients and in tuberculous tissue, and believed to be…

Having tubercles; affected with, tubercles; tuberculate; as, a tubercled lung or stalk.

haracterized by the production of tubercles in the internal organs, and especially in the lungs, where it constitutes the most common variety of pulmonary consumption.

Tubular breathing (Med.), a variety of respiratory sound, heard on auscultation over the lungs in certain cases of disease, resembling that produced by the air passing through the trachea. -- Tubular bridge, a bridge in the form of a hollow trunk or tube, made of iron plates riveted together, as the Victoria bridge o…

pertaining to vesicles; esp., of or pertaining to the air vesicles, or air cells, of the lungs; as, vesicular breathing, or normal breathing, in which the air enters freely the air vesicles of the lungs.

Of or pertaining to the State of Virginia. Virginia cowslip (Bot.), the American lungwort (Mertensia Virginica). -- Virginia creeper (Bot.), a common ornamental North American woody vine (Ampelopsis quinquefolia), climbing extensively by means of tendrils; -- called also woodbine, and American ivy. [U.S.] -- Virginia…

ential to animal life. [Obs.] -- Vital capacity (Physiol.), the breathing capacity of the lungs; -- expressed by the number of cubic inches of air which can be forcibly exhaled after a full inspiration. -- Vital force. (Biol.) See under Force. The vital forces, according to Cope, are nerve force (neurism), growth forc…

Organs that are necessary for life; more especially, the heart, lungs, and brain.

An abscess cavity in the lungs.

and with an audible piping or whistling sound, as persons affected with asthma. "Wheezing lungs." Shak.

Tuberculosis, esp. of the lungs.

time during which a woman is widow; also, rarely, the state of being a widower. Johnson clung to her memory during a widowhood of more than thirty years. Leslie Stephen.

of breathing impaired by the rupture, dilatation, or running together of air cells of the lungs, so that while the inspiration is by one effort, the expiration is by two; affected with pulmonary emphysema or with heaves; -- said of a horse. Youatt.

The passage for the breath from the larynx to the lungs; the trachea; the weasand. See Illust. under Lung.