188 



GLOSSARY. 



twisting : force of torsion, a term 

 employed to denote the effort made 

 by a thread which has been twisted 

 to untwist itself. 



Torticollis (Lat. tor'queo, I twist; 

 collum, the neck). Wry-neck. 



Tor'tuous (Lat. tor'queo, I twist). 

 Twisted ; winding. 



Tor'ulose (Lat. toru'lm, a kind of 

 ringlet). In botany, having suc- 

 cessive rounded swellings, as the 

 pods of some cruciferous plants. 



Tor'us (Lat. a rope ; also a bed). In 

 architecture, a large moulding, 

 with a semicircular section, used 

 in the bases of columns ; in botany, 

 the receptacle or part of the flower 

 on which the carpels are seated. 



Tour'niquet (French). An instrument 

 used in surgery for producing 

 pressure on a blood-vessel so as to 

 restrain haemorrhage. 



Toxee'mia (Gr. TO|IKW, too/icon, a 

 poison ; al/na, haima, blood). A 

 poisoned state of the blood. 



Tox'ical (Gr. TOIKOV, tox'icon, a 

 poison). Poisonous. 



Toxicohee'mia (Gr. TOIKOV, tox'icon, 

 a poison ; attics, hai'ma, blood). 

 See Toxeeinia. 



lexicological (Toxicology}. Relating 

 to the branch of medicine which 

 describes poisons. 



Toxicol'ogy (Gr. rofritov, tox'icon, a 

 poison ; \oyos, log'os, discourse). 

 The branch of medical science 

 which describes poisons, their 

 effects, and antidotes. 



Tox'odon (Gr. ro&v, todon, a bow ; 

 oSouy, od'ous, a tooth). An extinct 

 genus of pachydermatous or thick- 

 skinned animals, having teeth bent 

 like a bow. 



Tra'chea (Gr. rpaxvs, trachus, 

 rough ; apr^pia rpaxeio,, arte'ria 

 trachei'a, the rough artery or air- 

 tube). The windpipe, a cartilagi- 

 nous and membranous tube, which 

 conveys the air into and out of the 

 lungs. 



Tra'cheae (Plural of Tra'chea). In 

 botany, the spiral vessels of plants ; 

 in entomology, the vessels by which 

 air is carried to every part of the 

 body in insects. 



Tra'cheal (Trachea). Belonging tc 

 the windpipe. 



Trachea'ria (Trachea). An order 

 of arachnidan invertebrata, whose 

 organs of breathing consist of 

 tracheae. 



Trachei'tis (Trachea ; itis, denoting 

 inflammation). Inflammation of 

 the trachea ; croup. 



Trachelip'odous(Gr. rpax-n\os, troche - 

 los, a neck ; irovs, pous, a foot). 

 Having the feet united to the head. 



Trachen/chyma (Trachea; Gr. eV 

 Xvy-a, en'chuma, a tissue). Vege- 

 table tissue consisting of spiral 

 vessels. 



Tracheotomy (Gr. rpaxeta, trachei'a, 

 the windpipe ; r^/^vw, tcmnd, I 

 cut). The operation of making an 

 opening into the windpipe. 



Tra'ch'yte (Gr. rpaxvs, trachus, 

 rough). A rock of volcanic origin, 

 consisting of felspar, and having a 

 harsh feel. 



Trac'tile (Lat. traho, I draw). Capa- 

 ble of being drawn out in length. 



Trac'tion (Lat. traho, I draw). Draw- 

 ing ; the act of being drawn ; in 

 >mechanics, the act of drawing a 

 body along a plane. 



Trac'tor (Lat. traho, I draw). That 

 which draws. 



Trade-winds (Trade and wind; be- 

 cause favourable to navigation and 

 trade). The constant winds which 

 occur in the open seas to the dis- 

 tance of about thirty degrees north 

 and south of the equator ; those 

 on the north of the equator being 

 from the north-east, and those on 

 the south from the south-east. 



Tra'gns (Gr. rpayos, tra'gos, a goat). 

 In anatomy, a conical prominence 

 projecting backwards from the 

 front of the ear. 



Trajec'tory (Lat. trans, across ',jd<i io, 

 I cast). The path of a moving 

 body which is acted on by given 

 forces. 



Transcendental (Lat. trans, beyond ; 

 scando, I climb). Surpassing; in 

 philosophy, relating to that which 

 goes beyond the limits of actual 

 experience. 



Tran'sept (Lat. trans, across ; sep- 



