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of Scolecida, intestinal worms 

 comprising the fluke-worm, which 

 are furnished with suctorial pores : 

 trematode, n., trem'dt'dd, one of 

 the Trematoda or sucking worms. 



tremelloid, a., tremf-el-dyd (L. 

 trVmulus, a shaking, a quaking : 

 Gr. tremo, I tremble ; eidos, 

 resemblance), in bot., jelly-like 

 in substance or appearance. 



trepan, n., tr$p*dn'(Gt. trupanon, 

 a borer, an auger ; F. trepan), a 

 circular saw employed for remov- 

 ing portions of the bone of the 

 skull, when the skull is injured. 



trephine, n., tref*en' or tr%f'4n 

 (also from Gr. trupandn, a borer, 

 an auger), an improved circular 

 saw, with a moveable centre pin, 

 now used instead of the trepan 

 for perforating the cranium, and 

 removing circular pieces of bone 

 from it. 



triadelphous, a., tr^dd-eir-us (Gr. 

 treis, three ; addphos, a brother), 

 in bot., having stamens united in 

 three bundles by their filaments. 



triandrous, a., trl-and'-rus (Gr. 

 treis, three; oner, a male, andros, 

 of a male), in bot., having three 

 stamens in a flower. 



triangularis sterni, trl-ang'-gul* 

 dr^is sternal (L. trmnguldris, 

 triangular ; sternum, the breast- 

 bone, sterni, of the breast-bone), 

 in anat. , a thin plane of muscular 

 and tendinous fibres, situated 

 upon the inner wall of the front 

 of the chest. 



tribe, n., trlb (L. tribus, a tribe 

 from tris, three), in bot., a group 

 of genera more nearly related in 

 particular characters than others 

 under the same Order ; a division 

 between Order and Genus. 

 Tribulus, n., trW-ul-us (L. trib- 

 #/ws,an instrument of four prongs, 

 a caltrop), a genus of plants, Ord. 

 Zygophyllacese, having each car- 

 pel of the species armed with 

 three or four prickly points: 

 Tribulns terrestris, ter-resMs 

 (L. terrZstris, terrestrial from 



terra, land), a prickly plant of 

 the East, found in Palestine; the 

 supposed thistle of the New Test. 



triceps, a., tri'-s&ps (L. triceps, 

 having three heads from tris, 

 three ; caput, the head), having 

 three heads: n., the three-headed 

 muscle : triceps extensor, tri'* 

 seps ekS'tVns'or (L. extensor, that 

 which extends or stretches 

 from extensus, stretched out), the 

 name of several muscles which 

 extend a limb: t. extensor cubiti, 

 Mb' ft -I (L. cubitum, the elbow or 

 bending of the arm), the stretch- 

 ing muscle of the arm having 

 three heads ; a muscle arising by 

 three heads from the scapula, and 

 from the humerus, and inserted 

 into the olecranon : t. e. cruris, 

 Icrdr'-is (L. cms, a leg, cruris, of 

 a leg), the stretching- out muscle 

 of the leg having three heads ; 

 this muscle extends the leg, and 

 consists of the three parts, 'vastus 

 externus, ' * vastus internus, ' and 

 'crureus,' which see: t. longus 

 adductor femoris, Iting'gus ad- 

 dukt'-dr fem'or-is (L. triceps, 

 three-headed ; longus, long ; ad- 

 ductor, that which brings one 

 part towards another ; femur, the 

 thigh, femdris, of the thigh), the 

 long triceps adductor muscle of 

 the thigh-bone. 



Trichadenia, n. , tri-ad-en'i-a (Gr. 

 thrix, hair, trichos, of hair ; aden, 

 an acorn), a genus of plants, Ord. 

 Bixacese : Trichadenia Zeylan- 

 ica, zl-lan'-ilc'a, (of or from Cey- 

 lon), a large tree of Ceylon, called 

 Tettigass, which yields an oil 

 used for burning in lamps, etc. 



trichiasis, n., trik-i'-as-is (Gr. 

 thrix, hair, triclids, of hair), a 

 disease of the eye in which the 

 eyelash turns in upon the eyeball 

 and produces irritation. 



Trichilia, n., triTc-iKi-a (Gr. tricka, 

 in three ways or parts), a genus 

 of plants, Ord. Meliaceae, having 

 three-lobed stigmas, and their 

 capsules three-celled, and three- 



