TREMOGRAM 



1538 



TRIAMMONIC 



[Mex. Ph.], a thick, granular turpentine used as a 

 balsamic stimulant. 



Tremogram (trem'-o -gram) [tremare, to tremble; 

 ypd[ifia, a. writing]. The tracing of tremor made by 

 means of the tremograph. 



Tremograph (trem' - o- graph) [tremare, to tremble; 

 ypa<j>eiv, to write]. An instrument for making graphic 

 records of tremor. 



Tremor (trem' -or) [tremere, to shake]. An involuntary 

 trembling or agitation of the body, or some part of it. 

 T., Arsenical, a tremor the result of arsenical intoxica- 

 tion. T. capitis, tremor affecting the muscles of the 

 neck and head. T. coactus. Synonym of 7"., Forced. 

 T., Continuous, a form of tremor which^esembles that 

 of paralysis agitans ; it is, however, likely to be remit- 

 tent, and may be diminished or arrested by voluntary 

 effort. T., Convulsive. See Paramyoclonus. T., 

 Epileptoid, intermittent clonus with tremor. T., Fi- 

 brillary, tremor caused by consecutive contractions of 

 separate muscle-fibrillae. T., Forced, the convulsive 

 movements persisting during repose after voluntary 

 motion, due to an intermittent and rhythmic irritation of 

 the nervous centers. T., Hysteric, the tremor observed 

 in hysteria, and due to the uncertainty of nervous im- 

 pulse. T., Intention, one appearing on voluntary 

 movement T., Intermittent, the tremor commonly 

 observed in hemiplegics on any attempt at voluntary 

 motion. T., Mercurial, a peculiar form of tremor ob- 

 served among smelters and others exposed to the fumes 

 of mercury. It is sudden or gradual in onset, and is 

 usually unaccompanied by salivation. The arms are 

 first involved, and then the entire muscular system. 

 If allowed to go on, paralysis, mania, and idiocy may 

 result. T., Muscular, slight, oscillating, rhythmic 

 muscular contractions. T., Purring. Synonym of 

 Purring Thrill. T. saturninus, the tremor of lead- 

 poisoning. T. tendinum. Synonym of Subsultus 

 tendinum. T., Vibratile. Synonym of Fremitus. 

 T., Volitional, a trembling of the entire body dur- 

 ing voluntary effort, as observed in multiple sclerosis. 

 See T, Intentional. 



Tremorless (trem' ' -or-less) \_tremere, to trembie]. Free 

 from tremor. 



Tremulation (trem-u-la'-shun) [tremulare, to trem- 

 ble]. A tremulous condition. 



Tremulous (trem' '-u-lus) [tremere, to shake]. Trem- 

 bling. T. Iris. See Iris. 



Trendelenburg Posture. See Postures, Table of. 



Trepan (tre-pan') [rpvirav, bore]. An old form of the 

 word trephine. See Trephine. 



Trepanatio (trep- an-a' -she-o) [L.]. See Trephining. 

 T. corneae, an operation for conical cornea, by means 

 of the conical trephine. A small circular piece is re- 

 moved from the center of the cornea. The membrane 

 of Descemet only is penetrated. A hernia at once 

 forms, which is daily punctured until the cicatricial pro- 

 cess is complete. 



Trepanation (trep - an - a' '- shun) [rpviravov, a borer]. 

 The operation of trephining. 



Trepang (tre-pang / ) [Malay, trlpang]. The sea-slug, 

 or bichoaotnar, Holothuria edulis ; a worm-like sea- 

 animal highly prized in Chinaasan ingredient of soups; 

 regarded as analeptic. Unof. 



Trepanize (trep'-an-iz) [rpvirav, to bore]. To trepan. 



Trepanning (tre-pan' -ing) [r/jwrdvi, to bore]. Boring ; 

 using the trephine. T. -elevator, a lever used to raise 

 the piece of bone detached by the trepan. 



Trephine (ire-fin') [rplntavov ; rpvnav, to bore]. An 

 instrument for excising a circular piece of bone, usually 

 trom (he skull. T., Brace, a trephine with an ordi- 

 nary carpenters' brace. T., Conical, a trephine with a 

 truncated cone-shaped crown and provided with oblique 



ridges on its outer surface to stop its progress as soon 

 the bone is penetrated. T., Corneal, a small ci 

 ting trephine used to remove a circular section from tl 

 summit of a conical cornea. It is manipulated wi 

 the thumb and finger. T. of Gait, a form of conic 

 trephine. T., Nasal, an instrument made of a ste 

 shaft ending in a small, fenestrated tube, having a kni 

 or saw edge. T., Tympanic, an instrument made c 

 a small steel shaft ending in a small, polished tub 

 2 mm. in diameter, with a cutting edge. 



Trephining (t re-fin' '-ing) [rpi'Trr/oig]. The operatic 

 of trephining. 



Trepidant Chair. See Trembling Chair. 



Trepidatio (trep-id-a' -she-o) [trepidare, to be agitated 

 The state of agitation. T. cordis, palpitation of tl 

 heart. 



Trepidation (trep-id-a' -shun) [trepidare, to tremble 

 A rhythmic movement of the foot in certain forms c 

 paraplegia and in epilepsy. 



Treppe (trep' -eh) [Ger.j. See Summation. 



Tresis (tre'-sis) [reTpaivtiv, to pierce]. Wound. 1 

 causis. See Burn. T. punctura, a puncture. 1 

 vulnus, a wound. 



Tri- [rpelc, or tres, three]. A numeral used as a pref 

 to denote three, or triple. 



Triacetamid (tri-as-et'-am-id) [tres, three; acelamid , 

 (C 2 H 3 0) 3 N. A chemic substance obtained by treaj 

 ing acetonitril with acetic anhydrid. 



Triacetin (tri-as'-et-in) [tres, three ; acetum, vinegar) 

 C 3 H 5 (C 2 H 3 2 ) 3 . An oily liquid found in cod-liver o 

 in some of the fats, in the oil of Euonymus europta ' 

 and in a mixture of glycerin and glacial acetic acid, j 



Triacetonamin (tri-as-et-on'-am-in) [tres, three ; a< 

 tone; amin\, C 9 H, 7 NO. A substance produced by t f 

 action of ammonia on acetone. It crystallizes in anbj 

 drous crystals that melt at 39. 6° C. 



Triacetyl (tri-as' -e-til) [rpslg, three ; i'/i], matter]. Ttl 

 compound C,N 3 0. 



Triacetylene (tri-as-ef -il-en). Synonym of BenzetuX 



Triacid (tri-as' -id) [tres, three ; acidum, acid]. A 

 acid containing three atoms replaceable by H. 



Triad (tri'-ad) [tres, three]. See Quantivalence. 

 of Hutchinson, the combination (notched teeth, j 

 terstitial keratitis and otitis) found in subjects of here [ 

 tary syphilis. 



Triadelphous (t ri -ad-el' -f us) [rpelg, three ; 



brother]. In biology, applied to stamens that | 

 united by their filaments into three sets. 



Triakaidekaphobia (tri-a-ki-dek-af-o' -be-ah) [rpia*\ 

 dem, thirteen ; 0<5/3oc, fear]. Insane dread of 

 number thirteen. 



Trial (tri' -a I) [Fr., trier, to try]. The act of trying 

 testing. T.-case, a box of lenses for testing and ! 

 timating the refraction of the eye, containing 

 biconcave, cylindric, prismatic, and other lenses, 

 frame, a spectacle-frame into which the trial-lei 

 may be slipped. T.-glasses or T.-lenses 

 uated set of concave, convex, cylindric. and 

 lenses used in testing vision. See AyV< 

 T.-jar, a jar in which mixed liquids are allowed 

 stand in order that they may separate by gravity. 



Trialate (tri-a'-lat) [tres, three ; alatus, winged], 

 biology, having three wings. 



Trialkylic (tri-alkil'-ik) [tres, three; alkali], < 

 taining three molecules of an alkyl. 



Triallylamin (tri-al-il'-am-in). A chemic compoul 

 (C 3 H 5 ) 3 N. 



Tnailyiin (tri-al ' -il-in) [Ires, three ; ally/]. 

 An oxid of allyl and glyceryl. 



Triamin (tri-am'in). See Amitt. 



Triammonic (tri-am-mon'-ik) [tres, three ; ammo*\ 

 Containing three molecules of nmmonium. 



