SYNOVIA! MEMBRANE 



319 



TAIIS 



Bynovial membrane, (sin-6'vi-al). [Synovia, 

 q.v.] Covering the bones at the joints, and 

 secreting synovia. 



Synthesis, (aiii'-the-sis). [Gk. synthesis, a put- 

 ting together.] Formation of a compound 

 by the direct union of the constituents, cf. 

 Analysis. 



Syntonin, (sin'to-nin). [Gk. syn, with; teino, 

 I extend.] A variety of tibriu, the chief con- 

 stituent of muscular fibre. 



Syphon, (si'fon). A bent tube, of which the 

 legs are of unequal length ; if the shorter 

 end be immersed in a liquid, and the air ex- 

 hausted from the syphon, the liquid will 

 rise and flow through the syphon. S. 6aro- 

 weter: a modification of the cistern baro- 

 meter, in which the cistern is replaced by a 

 short tube. 



Syren, (si'ren). [Gk. siren, water nymph.] An 

 instrument for measuring the number of 

 vibrations required to produce a given 

 musical note. 



Syringa, (si-ring'a). [Gk. syrinx, pipe. ]= 

 Lil.u; ; a plant belonging to Oleaceae. 



Syringe, (sir'inj). [Gk. syrinx, pipe.] A 

 small pipe, terminating; iu a small opening, 



with a piston working in it; used for 

 injection of liquids. Pneumatic S., v. Pneu- 

 matic. 



Syrinx, (si'rinks). [Gk. syrinx, pipe.] Tha 

 lower part of the larynx ; a modification of 

 the trachea at its junction with the bronchi. 

 The organ of song in birds. 



Syrup, (sir'up). A solution of sugar, usually 

 flavoured by some other substance; e.g., 

 Syrup of violets, &c. 



System, (sis'tem). [Systema, the Greek word.] 

 A number of things having some general 

 relation to each other ; arrangement of 

 things in order, according to some compre- 

 hensive plan. Botanical S., v. Botanical. 

 Linncean S. t v. Linnaeus's. Natural S., v. 

 Lindley's. 



Systemic, ( sis-tem'ik ). [System, q.v.] Re- 

 lated to a system. 



Systoles, (sis'to-lCz. [Gk. syxtello, I contract.] 

 Contractions: used for the contractions of 

 the auricles and ventricles of tho heart. 



Syzygies, (siz-i'jCz). [Gk. syzygia, union.]= 

 Linear relations; used to express the Sun 

 Moon and Earth being in one line. 



Syzygy, {Singular of Syzygies, q.v. 



T. 



Tabanus, (ta-ba'nus.) [The Latin name.] = 

 Horse-flies: an insect, the type of Tabamdae, 

 a family belonging to Diptera. 



Tabbinet, (tab'bi-net). A variety of watered 

 silk. 



Tables. See pages 351, 352. 



Tabular, ( tab'u-lar ). [L. tabuia, board.] 

 Occurring in plates or small tables. 



Tabulae, (tab'u-le). [The Latin word.] A 

 general term for small plates ; as plates 

 found in Aporose, Perforate, and Rugose 

 corals. 



Tabulata corals, (tab-u-la'ta). A sub-division 

 of Zoantharia ; a group of corals, removed 

 from Madreporaria; having horizontal plates 

 dividing the corallite into compartments; 

 abundant in Palaeozoic and in Tertiary 

 strata, but absent in Secondary. 



Taccaceae, (tak-ka'se-e). [Tacca, the typical 

 genus. ]=Taccads: large tropical herbs, with 

 tuberous roots, belonging to Narcissales. 



Tachometer, ( tak-om'e-ter ). [Gk. tachos, 

 speed; metron, measure.] An 

 apparatus for measurement 

 of velocity, especially in ma- 

 chinery. 



Tachypetes, (tak-ip'e-tez). [Gk. 

 tacky s, quick; petao, I fly.] 

 = Frigate-bird, q.v. 



Tachysaurus, ( tak-i-sau'rus ). 

 [Gk. tachys, swift; saura, 

 lizard.] T. japonicus=Grsss 

 lizard, q.v. 



Tacking, (tak'king). The zig- 

 zag course taken by a vessel 

 sailing against an adverse wind. Tachometer. 



Tactile corpuscles, (tak'tll). [L. tactilis, 

 touchable.] Oval swellings of the nerves of 

 touch, where that sense is delicate; as iu the 

 tongue, fingers, &c. 



Tauorna, (ta-dor'na). [Tadorno, the Spanish 

 narae.]=Sheldrako or Shelduck: a bird be- 

 longing to Anatidse. 



Tadpole, (tad'pol). [A.-S. tade, toad; poln, 

 young.] A young frog, in the first stage of 

 its development. T. ^'/i=Raniceps trifur- 

 catus. 



Taenia, (tC'ni-a). [L. tcenia, ribbon. ^Tape- 

 worm : an intestinal worm, the type of 

 Treniada. 



Taeniada, (t5-m'a-da). [Tscnia, q.v. ; Gk. eidos, 

 form.] = Tape-worms and bladder-worms: 

 a division of Scolecida, internal parasitio 

 hermaphrodite animals, which have no ali- 

 mentary canal ; also called Cestoidea. 



Tsenioidea, (t5-ni-oi'de-a). [L. tcenia, ribbon; 

 Gk. eidos, form.]=l. Riband fishes: a family 

 of mackerel-like fishes, belonging to Acan- 

 thopterygii. 2. Sometimes used as=Taeniada. 



Taenite, ( te'nit ). [L. tcenia, ribbon.] An 

 alloy of iron. 



Tail, (tal). [Tcegl, the A.-S. word.] In 

 whales, dolphins, &c., a horizontal expan- 

 sion of the skin; in fish vertical and with 

 fin rays. Homocercal T., v. Homocercal. 

 Heterocercal T., v. Heterocercal : in sharks, 

 dogfish, sturgeon, &c. Prehensile T. : found 

 only in American Primates. Tailed am- 



Tail-race. The stream of water running from 

 a water-wheel, which has been moved by it. 

 Tails. T0?-se-r.=:Equisetacee. 



