TABESCENCE 



1454 



TACHYTOMY 



muscles of locomotion, has served to establish the term 

 Locomotor Alaxy as the common designation of the 

 affection. The anatomic changes consist of atrophy 

 and degeneration of the nerve-fibers, with hypertrophy 

 of the connective tissue, and extend from the lumbar 

 region to the calamus scriptorius. The symptoms are 

 numerous, but the chief are "lightning-pains;" un- 

 steadiness and incoordination of locomotor and other 

 voluntary movements, extending even to the upper ex- 

 tremities ; disorders of vision, among others the valu- 

 able Argyll- Robertson Pupil, q. v. ; cutaneous anes- 

 thesia ; girdle-sense ; abolition of the patellar reflex ; 

 diminution of sexual desire; peculiar "crises," etc. 

 The disease is a very chronic one, but is not always 

 progressive. It occurs most frequently in males, and 

 usually between the ages of thirty and fifty. The most 

 common cause, by some authorities said to be the only 

 cause, is syphilis. Other predisposing, exciting or adju- 

 vant causes are prolonged exposure to cold and wet, 

 alcoholism, mental strain and traumatism of the spine. 

 T. coxaria, wasting from hip-joint disease. T. 

 ergotica, a toxemia resulting from the use of ergot ; 

 its symptomatology closely simulates that of locomotor 

 ataxia. T. glandularis. Synonym of T. mesenterial. 

 T., Hereditary. See Friedreich's Ataxia. T., 

 Lacteal. See Hyperlactation. T. mesentericus 

 and T. scrofulosa, old terms descriptive of diseases 

 of the digestive and assimilative organs, sometimes 

 tuberculous, sometimes syphilitic, and attended with 

 wasting. T. neurasthenica, neurasthenia with the 

 symptoms of locomotor ataxia. T. pulmonalis, pul- 

 monary tuberculosis. T. saturnina, the general dis- 

 ability due to lead-poisoning. T. scrofulosa. 

 Synonym of T. mesenterica. T., Suspension 

 Treatment of, see Suspension. T. urinalis. Syn- 

 onym of Diabetes mellitns. 



Tabescence (tab-es'-ens) [tabes, wasting] . Wasting ; 

 marasmus ; emaciation. 



Tabescent (tab-es' '-ent) [tabescere, tabescens, to waste]. 

 Wasting, or becoming wasted, or emaciated. 



Tabetic (tab-et'-ik) [tabes, wasting]. Pertaining to or 

 affected with tabes. 



Tabic (pab'-ik) [tabes, wasting]. Affected with tabes; 

 of the nature of or pertaining to tabes. 



Tabid (tab' -id) [tabes, wasting]. Wasted, by disease ; 

 emaciated ; affected with tabes. 



Tabidness (tab' -id-nes) [tabes, wasting]. The state 

 of being reduced by disease. 



Tabific (tai-if'-ik) [tabes, wasting ; facere, to make]. 

 Tending to produce tabes or emaciation. 



Tabitude (tab'- it -ud) [tabes, a wasting]. Emaci- 

 ation ; wasting of the body. 



Tablature (tab' -lat-ur) [tabula, a table]. Separation 

 into tables, as exemplified in the frontal, parietal, and 

 occipital bones. 



Table (ta'-bl) [tabula, a table]. A flat-topped piece 

 of furniture. Either one of the two layers, the outer 

 and inner, of the cranial bones; the inner, from its 

 brittleness, is also called the vitreous table. T., Bed, 

 a small, portable table arranged to go across the bed. 

 T., Operating, a table used in surgical operations. 

 T. -spoon, T. -spoonful. See Coehleart magnum. 

 T., Vitreous (of the skull), the inner cranial table. 



Tablet (tab' -let) [tabula, a table]. I. A lozenge, a 

 troche. 2. A table, as of a cranial bone. See Table. 

 T. -triturates, in pharmacy, small, disc-shaped bodies, 

 prepared by moistening medicated powders with a 

 highly volatile liquid, then molding the moistened 

 powder, ejecting the tablet, and allowing the liquid to 

 evaporate, when the tablets retain their shape. The 

 bisis of tablet-triturates is mostly finely-powdered 

 sugar. They disintegrate in the alimentary canal. 



Tabophobia (tab-o-fo'-be-ah) [tabes; (pofioc, fear]. A 

 morbid fear of becoming affected with tabes ; it is a 

 frequent symptom in neurasthenia. 



Tabula (tab'-u-lah ). See Table. T. cathamnales, 

 the septal plates of Medusa. 



Tabular (tab' -u-lar) [tabula, table]. Having the form 

 of a table. 



Tabulet (tab'- u - let) [tabula, a table]. A lozenge; 

 a tablet. 



Tabum (ta'-bum). Synonym of Ichor. 



Tac (tak) [Fr., rot]. Synonym of 1/ifluenza. 



Tacahout (tak'-a-howl) [nat. Indian]. A kind of gall 

 produced upon the Tamarisk, q. v. ; astringent. Unof. 



Tacamahac, Tacamahaca (tak'-am-a-hak, tak-am-a- 

 kak'-ah) [Mexican]. A resin produced by various 

 trees of the genera Bursera, Protium, and Calophyllum ; 

 also, the resin of the buds of Populus balsamifera , the 

 Balm of Gilead poplar of N. America. These resins 

 are now little used in medicine. Unof. 



Tacca (tak'-ah) [Malay]. A genus of large-leaved 

 tropical plants. T. pinnatifida, Forst, yields a kind 

 of arrow-root. Unof. 



Tache (tahsh) [Fr.]. A spot, a coloration. T. 

 blanches, certain white spots described by Hanot 

 as occurring on the liver, especially on its convex sur- 

 face, in infectious diseases. Microscopically they 

 present a leukocytic infiltration with bacteria. T., 

 bleuatre, a spot of a delicate-blue tint, sometimes 

 observed on the skin of typhoid-fever patients. The 

 spots are of an irregularly rounded form, and from 

 three to eight lines in diameter; not elevated above 

 the skin, nor affected by pressure. They are must 

 common on abdomen, back, and thighs. They 

 usually precede the characteristic eruption of typhoid 

 fever. Ts. cerebrales, irregular, red, angio-paralytic 

 patches upon the skin, noticed in some cases of epi- 

 lepsy ; also, the spot on the blastoderm about the 

 end of the first week, which becomes the center of 

 embryonic development. T. meningeale, the red 

 line made when the finger-nail is drawn over the 

 skin. It was thought to be distinctive of meningeal 

 irritation, but may be observed in other conditions of 

 vaso-motor paresis. 



Tachistoscope (tak-is'-to-skop) [raxvc, swift ; rr/. 

 to view]. A form of stereoscope giving rapid im- 

 pressions by means of a movable diaphragm. 



Tachometer (tak-om'-et-er). See Hemotachometer. 



Tachycardia (tak-ik-ar' -de-ah) [raxH, quick ; icapdia, 

 heart]. Abnormal paroxysmal rapidity of cardiac- 

 action. The pulse may rise as high as 200 per minute. 

 It is a comparatively rare affection, due to 1 

 ysis of the inhibitory nerve of the heart or to stimula- 

 tion of the cardiac accelerator nerves. T., Essen- 

 tial Paroxysmal, tachycardia occurring in paroxysm> 

 and due to functional disturbance of the cardiac 

 nerves. T., Paroxysmal, tachycardia occurring pen- 

 odically in paroxysms. T. strumosa exophthal- 

 mica. See Exophthalmic Goiter. 



Tachygraph (tak'-ig- raf) [rajt'f, swift ; ypafyeiv, to 

 write]. Synonym of Hemotachometer. 



Tachyiatria (tak-e-e-a' -tre-ah) [ra^ff, swift; laTpeia, 

 treatment]. The art of curing quickly. 



Tachyotomy (tak-e-ot'-o-me) [raxvg, swift ; rnui/, sec- 

 tion]. Rapid dissection. 



Tachyphrasia (tak-if-ra' -ze-ah) [ra ji>c, swift ; 

 speech]. Morbid rapidity or volubility of speech. 



Tachypnea (tak-ip-ne' -ah)[raxn, swift ; itwii,. breath]. 

 Abnormal frequency of respiration. 



Tachythanatous (tak - ith - an' '- at- us) [rape, swift; 

 (hiftt-or, death]. Rapidly fatal. 



Tachytomy (tak-if -o-me) [raxi'C, swift; rofif), a CBl 

 ting]. The art of operating quickly. 



