TRU 



425 



TUB 



trunyteus, in lot., the trunk or 

 bole of a tree. 



truss, n., trus (F. trousser, to 

 pluck up ; trousse, a "bundle ; 

 L. tortus, a twisting, a wreath), 

 a mechanical contrivance, usually 

 for the support of parts concerned 

 in abdominal rupture or hernia ; 

 also for the support or for the 

 prevention of the protrusion of any 

 viscus. 



tryma, n., trim'-a (Gr. truma, a 

 hole, an opening), in bot., a fruit 

 resembling a drupe, as the walnut, 

 having a coriaceous or fleshy 

 epicarp, and roesocarp, one- 

 celled and one-seeded ; a two- 

 valved bony endocarp, having 

 partitions on the inner concave 

 surface, as the walnut. 



tuber, n., tub'-er (L. tuber, a 

 hump, a knob or excrescence), in 

 lot. , a solid fleshy mass attached 

 to many fibrous rooted plants ; 

 a thickened underground stem 

 or branch, as the potato ; in 

 anat., the rounded projection of 

 a bone : tuber annulare, an'- 

 nul-ar'-Z (L. dnnuldris, pert, to 

 a ring from dnnulus, a ring), in 

 (mat., another name for 'pons 

 Varolii,' see under 'pons': t. 

 calcis, Ical'-sis (L. calx, the heel, 

 colds, of the heel), the large 

 posterior extremity of the os 

 calcis, or largest bone of the 

 foot, presenting inferiorly two 

 tubercles which rest upon the 

 ground when walking: t. cinere- 

 um, sm-er'-e-um (L. cmereus, 

 ash-coloured from cinis, ashes), 

 a layer of grey matter at the base 

 of the cerebrum : t. cochlea, 

 k6Jc f -le-e (L. ctichtta, a snail, 

 cdchlece, of a snail), in the tym- 

 panum of the ear, the first turn 

 of the cochlea. 



tubercle, n., tub'-er-ld (L. tuber- 

 culum, a small hump or pro- 

 tuberance from tuber, a hump), 

 a little tuber ; in med., a term 

 of varied and wide application, 

 generally a small tumour in any 



part ; a new growth, composed of 

 primitive cells and nuclei, and 

 having a tendency to caseous or 

 calcareous degeneration; a morbid, 

 yellow, or caseous material, gener- 

 ally contained in cysts, of the size 

 of a hemp seed, or of a, pea, or loose 

 in the structure of organs ; in bot. , 

 a swollen simple root, as in some 

 Orchids ; in anat. , a small pro- 

 tuberance, as the tubercle of the 

 tibia: tubercled, a., tub'-Zr-ldd, 

 in bot., covered with warts : tub- 

 ercular, a., tub-erk'-ul-ar, full of 

 small knobs or tubercles ; caused 

 by tubercles ; applied to morbid 

 matter at one time compact 

 and yellowish, at another cal- 

 careous, and sometimes becoming 

 pultaceous, semi-fluid, and case- 

 ous. 



tubercula quadrigemina, tub -eric* 

 ul-a Jcwdd'-ri-jem'-m-a (L. tuber- 

 culum, a small hump ; quadrans, 

 a fourth ; gemini, twins), in anat., 

 four rounded eminences in the 

 cerebrum, separated by a crucial 

 depression, and placed two on 

 each side of the middle line, one 

 before another also called ' cor- 

 pora quadrigemina' : tuberculum 

 pharyngeum, far'-in-je'-um (new 

 L. phdryngeus, pert, to the 

 pharynx), the tubercle from 

 which the mesial band attaching 

 the pharynx to the skull princip- 

 ally springs. 



tuberculosis, n., lub-erMul'dzf-fe 

 (L. tuberculum, a small hump), 

 a form of fever accompanied by 

 the formation of small bodies, 

 called tubercles, in various tissues 

 of the body : tubercular menin- 

 gitis, a name given to the disease 

 caused by the deposition of tub- 

 ercles in the membranes of the 

 cerebrum also called ' acute 

 hydrocephalus. ' 



tuberous, a., tub'er>us (L. tuber, 

 a small knob), in bot., connected 

 into a bunch by rootlets, as in the 

 potato : tuberosity, n., tub'-gr-ds'-i- 

 ti, in bot., a kind of projection or 



