GLOSSARY. 



187 



compound words, implying connec- 

 tion with the thyroid cartilage. 



Th/roid (Gr. Bvpeos, thu'reos, & 

 shield ; eiSos, eidos, form). Like 

 a shield ; in anatomy, applied to 

 one of the cartilages of the larynx 

 from its shape ; also to a glandular 

 body lying in front of this cartilage ; 

 and to arteries supplying this part. 



Thyrsus (Gr. dvpaos, thur'sos, a 

 light straight shaft). In botany, 

 a kind of inflorescence resembling 

 a bunch of grapes. 



Thysanou'ra (Gr. ewavos, thu'sanos, 

 a tassel ; oupa, our a, a tail). A 

 family of wingless insects with 

 fringed tails. 



Tib'ia (Lat. a pipe or flute). The 

 largest bone of the leg ; so called 

 from its supposed resemblance to an 

 ancient flute. 



Tib'ial (Tib'ia). Belonging to, or 

 situated near, the tibia or large 

 bone of the leg. 



Timbre (French). An acoustic pro- 

 perty, not yet explained, by which 

 sounds of the same note and loud- 

 ness are distinguished from each 

 other. 



Tinc'ture (Lat. tin'go, I tinge). In 

 medicine, a solution, generally in 

 spirit, of the active principles of 

 any substance. 



Tinni'tus Au'rium (Lat.). A ringing 

 in the ears. 



Tissue (French, tissu, woven). In 

 anatomy and botany, the minute 

 elementary structures of which 

 organs are composed. 



Titho'nic (Gr. TiOwos, Titho'nus). 

 Pertaining to those rays of light 

 which produce chemical effects. 



Tme'sis (Gr. re/ij/w, temno, I cut). 

 In grammar, the division of a com- 

 pound word into two parts, a word 

 or words being inserted between 

 them. 



Tomen'tose (Lat. tomen'tum, down). 

 Downy ; covered with a down-like 

 wool. 



Tomen'tum (Lat. down). In anatomy, 

 a term applied to the minutely 

 divided vessels on the surface of 

 the brain ; in botany, a species of 

 longish, soft, entangled hairs. 



Ton'ic (Gr. TOVOS, ton'os, that which 

 tightens, or may be tightened). 

 In medicine, increasing strength ; 

 applied also to spasmodic con- 

 tractions which lasfc steadily for a 

 comparatively long time. 



Tonic'ity (Gr. TOWS, ton'os, that 

 which tightens). The property of 

 muscles, by which they remain in 

 a state of contraction, being at the 

 same time counterbalanced by other 

 muscles in a similar state. 



Ton'sil (Lat. tonsil'lce). An oblong 

 gland situated on each side of the 

 fauces. 



Tonsilli'tis (Lat. ton'sillce, the tonsils; 

 itis, denoting inflammation). In- 

 flammation of the tonsils ; a form 

 of sore throat. 



Topha'ceous (Lat. topli'us, a sand or 

 gravel stone). Consisting of depo- 

 sited calcareous matter. 



Topli'us (Lat. a sand or gravel stone). 

 A deposit of porous calcareous 

 matter ; in medicine, a chalky 

 deposit on the joints from gout. 



Topographical (Topog'raphy). De- 

 scriptive of a place or country. 



Topo'graphy (Gr. TOTTOS, top'os, a 

 place ; ypoufxa, graph' o, I write). 

 A description of a particular place, 

 giving a notion of everything con- 

 nected therewith. 



To'nnina (Lat. tor'queo, I twist). 

 Griping pains. 



Torna'do (Spanish, tornar', to turn). 

 A hurricane ; especially applied to 

 the whirlwind hurricanes prevalent 

 in some tropical regions. 



Tor'ose (Lat. torus, a protuberance). 

 Swelling in protuberances or knobs. 



Torrefac'tion (Lat. turrefac'io, I 

 roast). The operation of drying or 

 roasting. 



Torricellian Vac'uum (Torricel'li, 

 the inventor of the mercurial 

 barometer). The space left in the 

 upper part of a long tube closed at 

 one end and filled with mercury, 

 when it is inverted in this fluid, 

 which still remains in the tube to 

 the height of thirty inches. 



Tor'rid (Lat. tor'reo, I roast). Dried 

 with heat ; extremely hot. 



Tor'sion (Lat. tor'queo, I twist). A 



