TROPHIS 



1549 



TRUE 



Trophis (tro'-fis) [rpooiq, well-fed]. The ramoon-tree. 

 T. americana, a shrub of the West Indies, used as 

 an alterative and mild astringent. T. aspera, paper- 

 tree of Siam and India. The berries possess astrin- 

 gent and antiseptic properties, and the juice of the 

 leaves and young shoots is used in the treatment of 

 ulcers and cutaneous eruptions. Lnof. 

 Trophoblast [trof -o-blast) [rpo^fj, nourishment ; fi/Aio- 

 a germ]. In biology, the outer epiblastic layer 

 of the extra-embryonic somatopleure. 

 Trophoblastic [trof-o-blas r -tik) [rpo^ij, nourishment; 



-roc, germ]. Pertaining to a trophoblast. 

 Trophocalyx (trof'-o-ka-liks) [rpoo??, nourishment ; 



-", a calyx]. See Trophosphere. 

 Trophodisc (trof'-o-disk) [rpo^ij, nourishment ; SiaKoc, a 



disc]. See Trophosphere. 

 Tropholecithal (trofo-les'-ith-al) [rpooij, nourishment; 

 toe, the yolk of an egg]. Pertaining to a tropho- 

 lecithus. 

 Tropholecithus (trofo-les' -ith-us) \rpo6fi, nourishment ; 

 'of, the yolk of an egg]. In biology, the food- 

 yolk of a meroblastic egg. Cf. Morpholecithus. 

 Trophology (trof-ol'-o-je) [vpooij, nutrition ; /oyoc, 

 science]. The science which treats of or relates to 

 nutrition. 

 Throphoneurosis (trof- o-nu-rc/- sis) [rpobfi, nourish- 

 ment; veipov, nerve ; voooc, disease] . Any atrophic pro- 

 cess due to injury or perverted action of the nerves or 

 nerve-centers. -T., Disseminated. Synonym of Scle- 

 ma. T., Facial, progressive facial atrophy ; 

 ; facial hemiatrophy. T., Musuclar, trophic changes 

 in the muscles in connection with disease of the 

 i nervous system. T. of Romberg, unilateral atrophy 

 | of the face ; hemiatrophy. 



Trophoneurotic (trof- o-nu-rot f -ik) [rpooij, nourish- 

 ment; vevpov, nerve; voaoq, disease]. Pertaining to 

 a trophoneurosis. 

 Trophonosus (trof-on f -o-sus). See Tropkopathy. 

 Trophopathy (trof-op' -ath-e) [rpooij, nutrition ; Trdfloc, 



disease]. Any nutritional disorder, 

 "rophophore (trof'-ofor) [rpooy, nourishment ; ospeiv, 

 to bear]. In biology, one of the ameboid cells of 

 sponges, giving rise to gemmules. 

 Trophophorous (trof-off'-or-us) [rpotyi], nourishment ; 



Qepeiv, to bear]. Pertaining to trophophores. 

 Trophoplasm (trof'-o-plazm) [rpotyrj, nourishment; 

 " joeiv, to mold in clay]. In biology, Nsegeli's term 

 for the vital substance of the cell, the formative plasm, 

 I or morphoplasm, in contrast to the idioplasm. 

 Trophoplast (trof f - o - plasf) [rpoor,, nourishment; 

 irf-aaaeiv, to mold or form in clay]. In biology, a 

 plastid ; a mass of formative plasm, 

 rophosomal (trof- o-so / - mat) [rpotjrfj, nourishment; 

 ■ aitfia, body]. Nutritive. Pertaining to a trophosome. 

 'rophosome (trof / -o-som) [r/xioij, nourishment ; aufia, 

 I body]. In biology, the mass of nutritive zooids of a 

 1 hydrozoan. Cf. Gonosome. 



'rophosperm (trof / -o-spurm) [rpofyij, nourishment; 

 ' OKipua, seed]. The portion of an ovary that bears 

 the ovules. 



rophospermium (trofo-spur / -me-ttni) [rpotif/, nourish- 

 ment ; a-ipua seed]. In biology, the placenta, 

 rophosphere [trof'-o-sfer) [rpottrf], nourishment; 

 i o+aipa, a sphere]. In biology, the tissue between the 

 decidual stroma and the blastocyst in Erinaceus. See 

 Trophodisc, Trophocalyx, Trophoblast, Trophospongia. 

 rophospongia (tro-fo-spun'-je-ah) [rpotyij, nourish- 

 ment; n-royyia, a sponge]. In biology, the outer or 

 maternal layer of the trophoblast, trophodisc, or tro- 

 phocalyx. 



rophotropic (trof-o-trop / -ik) [rpodf/, nourishment; 

 .to turn]. In biology, exhibiting trophotropism. 



Trophotropism (trof-o-tro'-pizm) [rpoor/, nourishment; 

 rperreiv, to turn]. In biology, the term applied by 

 Stahl (1884) to the attraction (positive trophotropism) 

 and repulsion (negative trophotropism) exhibited by 

 certain organic cells to various nutritive solutions. 

 A phenomenon now included under Chemotaxis , q. v. 



Trophozooid [trof-o-zo / -oid) [rpofrj, nourishment; 

 stiov, an animal; eidoc, form]. In biology, nutritive 

 zooid. 



Tropic, Tropical (troJ/-ik, trop'-ik-al) [rpo-moc, 

 tropic]. Pertaining to or found in the tropics. T. 

 Acid. See Acid. T. Big Leg. See Elephan- 

 tiasis arabum. T. Boil. See Boil, Aleppo. T. 

 Chlorosis. See Ankylostomiasis and Dochmiasis. 

 T. Fruit Laxative. See Senna. T. Measles, 

 a name suggested by Cautlie for a disease that was 

 prevalent among the foreign residents of Hong Kong, 

 during September and October, in 1888. Mild cases 

 were regarded as " German measles," severe cases as 

 a form of dengue. He defines it as follows : •* Rubeola 

 tropica is a specific eruptive fever, the primary, rose- 

 red rash appearing on the face and neck on the second 

 day of the illness ; the second rash, miliary and 

 papular, on the body, face, and occasionally on the 

 limbs on the fourth day. The third rash, of small, 

 coalescent wheals, appears on the arms and legs, or 

 legs only, on the sixth day. when the fever subsides. 

 The severe form attacks adults chiefly. It is epidemic, 

 contagious, but seldom associated with catarrh or 

 desquamation, and characterized by the intensity of 

 the pain in the back, head, and orbit on the third and 

 fourth days of the illness." The duration of the 

 disease was much shorter than that of dengue, the 

 termination was invariably favorable, and the compli- 

 cations and sequela; of measles were not observed in 

 any case. 



Tropidin (trap* -id- in) [atropin], C S H 13 X. A sub- 

 stance resulting from the decomposition of atropin 

 in the presence of hydrochloric and glacial acetic acids ; 

 it is an oily fluid having an odor resembling that of 

 coniin. 



Tropidosternal (trop-id-o-stnr'-nal) [rp6-iq, keel ; 

 arepvov, sternum]. Keeled, as a breast-bone. 



Tropin (tro'-pin) \atropin\, C 8 H 15 NO. A substance 

 obtained by the decomposition of the alkaloid atropin ; 

 it crystallizes from ether in plates, melts at 63 C. , and 

 boils at 229 C. 



Tropis (tro'-pis) \rp6~iq, keel]. In biology, the keel 

 or backward curve of a cymba, as in sponge-spicules. 



Tropsin (trop / -sin). Same as Tropacocain. 



Trousseau's Phenomenon or Sign. A diagnostic 

 sign of post-operative tetany. The spasm of an ex- 

 tremity which may be produced by compression of its 

 principal blood-supply or nerve-supply for a brief 

 period of time, from a few seconds to a few minutes. 

 The spasm will continue as long as the pressure is 

 maintained. T.'s Spots, Taches cirebrales : red 

 spots which may appear on the skin after it has been 

 mechanically irritated ; they were thought by Trous- 

 seau to be diagnostic of meningitis. 



Trouts (tru'-utz) [Irish]. A form of chloasma occur- 

 ring among the Irish peasantry in places where they 

 have turf- fires. 



Trouser-leg Culture. A bacterial growth, as that of 

 Vibrio protetts, in which the liquified area of the 

 nutritive gelatin corresponds to the form of an empty 

 stocking-leg. (Schenk. ) 



True (tru) [ME., true, true]. The opposite of false. 

 Applied to organs functionally active or perfect. T. 

 Corpus luteum, the corpus luteum of pregnancy. 

 T. Pelvis, that part of the pelvic cavity situated below 

 the brim or ilio- pectineal line. T. Resins. See 



