Tarsus (Gr. torsos, tarsus), the instep of man. the hock of the horse.

Taxis (Gr. taxis, order; tassein. to arrange ), the returning of a prolapsed structure, as a hernia or the uterus, by the hand.

Telegony (Gr. tele, afar; gone, offspring), the influence of a previous sire on the offspring of a subsequent one through the same dam.

Temperament (Lat. temperamentum), disposition, general character as regards acting and feeling; the predominance of one group of constitutional functions over others in an individual.

Tendo Achillis, the tendon of the gastrocnemius muscle connected with the heel; the tendon that is cut in hamstringing.

Tenotomy (Gr. tenon, tendon; temnein, to cut), an operation of cutting a tendon to correct some deformity of the limb.

Tetanus (Gr. tetanos, teinein, to stretch), a continuous spasmodic contraction of muscles.

Tetrad (Gr. tetra, four), a group of four; a microscopic organism divided into four elements.

Therapeutic (Gr. therapeutikos, curing), pertaining to therapeutics or the art of healing; curative.

Thoracic (Gr. thorax, thorax), pertaining to the chest and to certain organs contained within it.

Thrombosis (Gr. thrombos, clot), a clot of blood formed within the heart or blood-vessels, and causing an obstruction to the circulation.

Thrush, a parasitic stomatitis presenting diffuse white patches, also called aphthae: a diseased condition of the horse's foot attended with a foul-smelling discharge.

Tidal air, the quantity of air taken in during quiet breathing.

Tourniquet (Fr. tourner, to turn), an instrument for controlling the circulation of blood in a bloodvessel by means of compression.

Toxic (Gr. toxikori, poison), poisonous, due to poisoning.

Trachea (Gr. tracheia, a windpipe), the windpipe, a cartilaginous and membranous tube extending from the larynx to the lungs.

Tracheotomy (Gr. tracheia, trachea, and tome, cutting), removal of a portion of the trachea, or incision into the trachea.

Trapezoid (Gr. trapeza, a table, and cidos, form), one of the bones of the knee.

Traumatic (Gr. traumatikos - trauma, a wound), caused by a wound or injury.

Trichiasis (Gr. thrix, a hair), abnormal direction of the eyelashes, producing friction and inflammation of the globe.

Tricophyton (Gr. thrix, a hair, and phi/ton, a plant), a germ or vegetable organism, parasitic upon the hair - Tricophyton tonsurans is what causes ringworm.

Tricuspid (Lat. tres, three; cuspis, point), having three cusps; as the tricuspid valve in the aortic and pulmonary artery.

Trismus (Gr. trismos, trizein, to gnash), spasm of the muscles of mastication, locked jaw.

Trochanter (Gr. trochanter, trochos, a wheel or pulley), the process of bone on the upper extremity and sides of the femur or thigh-bone.

Trochlea (Gr. trochilea, a wheel or pulley), a part having the nature of a pulley.

Trypsin (Gr. tripsis, a rubbing), a substance which converts proteids into peptones; the ferment of pancreatic juice.

Tuber (Lat. tuber, a bump or swelling), a thickened portion of an underground stem, as the potato.

Tuberculin (Lat. tuberculum, a tubercle), a glycerine extract of cultures of the Bacillus tuberculosis.

Tuberculosis (Lat. tuberculum, a tubercle), the infectious disease corresponding to what is commonly called consumption, and due to Bacillus tuberculosis, discovered by Koch in 1S82.

Turbinated (Lat. turbo, a top), top-shaped.

Tympany (Gr. tympanon, drum), distension of an organ or part with gas.

Tyrosus (Gr. tyros, cheese), a substance occurring in pancreatic digestion, a decomposition product of proteids.


Ulna (Lat., a cubit), the small bone of the forearm ■or horse's foreleg, its companion bone being the radius.

Umbilicus (Lat.), the navel.

Ungulate (Lat. ungula, a hoof), having hoofs.

Urea (Gr. ouron, urine), the chief solid constituent of the urine.

Urethra (Gr. ourethru, urethra), the canal extending from the bladder to the end of the penis, through which the urine is discharged.

Urticaria (Lat. urtica, a nettle), nettlerash, a disease of the skin characterized by wheals.


Vaccinia (Lat. vacca, cow), cowpox.

Valvulitis (Lat. valvula, a small valve; itis, inflammation), inflammation of the valves of the heart.

Varicose (Lat. varix, a varix), showing varices or dilatations; abnormally dilated, as a vein.

Vegetations (Lat. vegetatio, regere, to grow), a name applied to morbid growths, such as abnormal granulations, excrescences, warts, etc.

Vena cava (Lat. vena, vein, cavus, hollow), a name for the two large veins entering the heart.

Ventricle (Lat. ventriculus, dim. of renter, a belly), the name for the two lower cavities of the heart.

Vertigo (Lat. vertere, to turn), giddiness, dizziness.

Vesicle (Lat. vesica, bladder or blister), a small blister-like formation.

Vibrio (Lat. vibrare, to vibrate), a genus of Schizo-mycetes similar to Spirillum.

Virus (Lat.), a poison that causes a morbid process or disease; any pathological microbe.

Vitreous humour (Lat. vitrum, glass; humor, fluid), the transparent gelatin-like substance that fills the posterior chamber of the eye.

Volition (Lat. rolitio, will), determination to act; a willing to do or not to do something.

Vomer (Lat., a ploughshare), the bone situated in the middle of the nostrils.

Vulva (Lat.), the female pudendum, or posterior part of the genital passage.


Xiphoid (Gr. xiphos, sword; eidos, like), sword-shaped ; applied to the flat piece of cartilage behind the sternum.


Zygomatic (Gr. zygoma, zygoma), pertaining to the zygoma or cheek-bone.