GLOSSARY. 611 



TRAUMATIC. Kslating to a wound. 



TREPHINE. An instrument for making openings in flat bones. It 

 consists of a circular saw, centre pin and handle, and removes a circular 

 portion of the bony plate. 



TRTSMUS. A variety of tetanus affecting only the jaws, and causing 

 their spasmodic closure. 



TUBERCULAR. That which relates to tubercles, or that is formed by 

 tubercles. Applied in anatomy to rounded eminences, and in patho- 

 logical anatomy to a morbid production contained in cysts, or loose in 

 the structure of organs. This matter is at first compact and yellowish ; 

 at times calcareous ; afterwards pultaceous, semifluid, and curdy. 



TYMPANUM. The drum of the ear. 



TYPHOID. Eesembling typhus fever. Often applied to a fever in 

 which the agminated glands of the intestines arc in a morbid condition. 



UMBILICAL CORD. The navel string. 



UMBILICATED. Depressed on its summit. 



URETHRA. The channel through which urine is discharged from the 

 bladder. 



VARICES. Dilatations of veins. 



VENA PORT.E. A vein which receives the blood from the stomach, 

 intestines, spleen, and pancreas, and breaks up again in the substance of 

 the liver. 



VENTRICLE. Literally a little belly. A name given to various small 

 cavities. 



VERTEBRA. A segment of the back-bone. 



VERTIGO. Giddiness. 



VESICULAR. Full of or containing vesicles or cells. Vesicular em- 

 physema is that in which the air-cells are enlarged. 



VIBRISS^E. The hairs that grow at the entrance of the nostrils and 

 other outlets. In cats the whiskers. 



VILLI. Small papillary eminences on the surface of mucous mem- 

 brane, and constituted of blood-vessels, nerves, and absorbents. 



VIRUS. A morbid poison. A principle inappreciable to the senses, 

 which is the agent which transmits infectious diseases. 



VISCERA. The entrails. Internal organs. 



