TAB 



409 



TEG 



whose roots yield a milky juice, 

 and has been used as a diuretic 

 and alterative ; the root is pre- 

 pared and mixed with coffee as 

 chicory is, or is often used alone 

 medicinally : taraxacine, n., tar- 

 ak^-GLS'ln, a bitter crystalline 

 principle obtained from the 

 dandelion. 



tarsus, n., tdrMs (Gr. tarsos, the 

 sole of the foot, or its upper 

 surface, also the edge of the eye- 

 lid), that part of the foot to 

 which the leg is articulated, the 

 front of which is called the instep; 

 a thin layer of cartilage in the 

 substance of each eyelid : tarsi, 

 n. plu., tdrsti, the articulated 

 feet of insects : tarsalia, n. plu. , 

 tdrS'dV'i-d, the bones of the 

 tarsus: tarsal, a., tdrs'-al, pert, 

 to the instep : meta-tarsus, n., 

 m%t'*a'tdrs f -us (Gr. meta, beyond, 

 and tarsos), the front of the foot 

 between the tarsus and the toes : 

 tarso-meta-tarsus, the single bone 

 in the leg of a bird, produced by 

 the anchylosis of the lower and 

 distal portion of the tarsus with 

 the meta - tarsus : tarso - meta- 

 tarsal, pert, to an articulation of 

 the tarsus with the meta-tarsus. 



tartar, n., tdrf-dr (F. tartre, Sp. 

 tartaro, tartar; mid. L. tart- 

 drum), a whitish saline substance, 

 tartrate of potass, which, in the 

 form of a crust, gathers on the 

 sides of casks and vats containing 

 wine ; a white crust which gathers 

 on the teeth of man : tartareous, 

 a., tart-ar^Z-us, in bot., having 

 a rough and crumbling surface : 

 tartaric, a., tdrt-dr'-ik, of or from 

 tartar ; denoting an acid found in 

 tartar, and in the juice of grapes 

 and other fruit : tartar emetic, 

 or tartrate of antimony, a prep- 

 aration of antimony, which is 

 a powerful emetic and depres- 

 sant. 



taurocholic, a., tdwr'-o-lco'l'-ilc (Gr. 

 taurds, a bull ; chdle, bile), 

 denoting an acid procured from 



the bile of the ox, and found in 

 quantity in the bile of man. 



Taxinese, n. plu., taks-in'-Z-e (L. 

 taxus, the yew tree ; Gr. taxis, an 

 arrangement, the leaves being 

 arranged on the branches like the 

 teeth of a comb), the Yew family, 

 a Sub-ord. of plants, Ord. Conif- 

 erse : Taxus, n. , tdks f >us, a genus 

 of ornamental trees : Taxus bac- 

 cata, b&k'kdt'a (L. bacca, a berry, 

 baccatus, furnished with berries), 

 the Yew, forming a valuable tim- 

 ber tree ; it yields resin, and its 

 leaves and berries are narcotico- 

 acrid. 



taxis, n., taks'-is (Gr. taxis, order, 

 arrangement), the process by 

 which parts which have left their 

 natural position in the body 

 are reduced or replaced by the 

 hand without the aid of instru- 

 ments. 



taxonomy, n., taks-MSm-l (Gr. 

 taxis, an arranging ; nomtis, law), 

 the department of natural history 

 which treats of the laws and 

 principles of classification : tax- 

 onomist, n., tdks-tin'dm-ist, one 

 skilled in these laws and principles 

 of classification. 



Tectibranchlata, n. plu., &M-tl- 

 brdng'ki'dt'd (L. tectus, covered ; 

 Gr. brangchia, gills), an Order of 

 Molluscs having the branchiae or 

 gills covered, or partly covered, 

 by the mantle. 



Tectona, n., Mk>t8n'>& (from its 

 native name tekka), a genus of 

 valuable timber trees, Ord. Ver- 

 benacese: Tectona grandis, grand'- 

 is (L. grandis, great), the Teak 

 tree of India, whose wood, very 

 hard and durable, is used for 

 shipbuilding. 



tegmen, n., teg'm&n (L. tegmen, a 

 covering), in bot., the second 

 covering of the seed. 



tegmentum, n., teg-ment^um (L. 

 tegmentum, a covering), in anat., 

 the upper part of the main body 

 of the peduncular fibres of the 

 cerebrum : tegmenta, n. plu., 



