GLOSSARY. 



185 



Tetrapet'alous (Gr. rerpa, tet'ra, 



four ; TrcTaAof, pet'alon, a petal). 



Having four petals. 

 Tetraphyllous (Grr. rerpa, tet'ra, 



four ; <f>v\\ou, pkullon, a leaf). 



Having four leaves. 

 Tetrap'odous (Gr. rerpa, tet'ra. four ; 



irovs, pous, a foot). Having four 



feet. 

 Tetrap'terous (Gr. rerpa, tet'ra, four ; 



irrepov, pter'on, a wing). Having 



four wings . 

 Tetrap'tote (Gr. rerpa, tet'ra, four; 



irrwiris, ptosis, case). In grammar, 



a noun having four cases. 

 Tetraquet'rous (Gr. rerpa, tet'ra, 



four ; Lat quad'ra, a square). 



In botany, having four angles, the 



faces being concave. 

 Tetrasep'alous (Gr. rerpa, tet'ra, 



four ; sepal). Having four sepals. 

 Tetrasper'mous (Gr. rerpa, tet'ra, 



four ; <rirep/j.a, sper'ma, seed). 



Having four seeds. 

 Tetrasyllable (Gr. rerpa, tet'ra, 



four; vv\\aft-ri, sul'labe, a syllable). 



Having four syllables. 

 Tetrathe'cal (Gr. rerpa, tet'ra, four ; 



077/C77, theke, a case). Having four 



thecse, or loculaments. 

 Tet'rodon (Gr. rerpa, tet'ra, four; 



65ovs, od'ous, a tooth). A genus of 



fishes having four large teeth. 

 Textile (Lat. texo, I weave). Woven, 



or capable of being woven. 

 Texture (Lat. texo, I weave). In 



anatomy, a name applied to the 



solid constituents of the body. 

 Thalamiflo'ral (Gr. 6a\a/jLos, thal'a- 



mos, a bed : Lat. flos, a flower). 



A subclass of exogenous plants, in 



which the parts of the flower are 



inserted separately into the thala- 



mus or receptacle. 

 Thal'amus (Gr. QaXapos, thal'amos, 



a bed). In anatomy, a name given 



to a part of the brain from which 



the optic nerve is partly derived ; 



in botany, the receptacle of the 



flower, or part of the stem from 



which the flower grows. 

 Thallogen (Thallus -, Gr. yevvau, 



genna'o, I produce). Producing a 



thallus. 

 Thal'lophyte (Thallus; Gr. <pvror t 



phu'ton, a plant). A plant pro- 

 ducing a thallus. 



Thallus (Gr. Oa\\os, thal'lus t a 

 bough). In botany, the cellular 

 expansion in cryptogamic plants 

 bearing the analogues of fruit. 



Thau'matrope (Gr. Qav^a, thauma, 

 a wonder ; rpeiru, trep'o, I turn). 

 An optical toy, consisting of a disc 

 having on successive divisions of its 

 circumference pictures representing 

 figures in a succession of different 

 positions in performing some action, 

 so that, when the disc is caused to 

 revolve, the impressions made by 

 figures on the eye remain and are 

 combined, and the figure appears 

 to pirouette before the eye. 



The'ca (Gr. 077*77, theke, a sheath 

 or case). In botany, the case con- 

 taining the reproductive matter in 

 some flowerless plants : in anatomy, 

 a strong fibrous sheath, enclosing 

 certain soft parts, as the spinal 

 cord. 



The'caphore (Gr. 077*77, theTce, a 

 sheath ; <pepia, pher'o, I bear). The 

 roundish stalk on which the ovary 

 of some plants is elevated. 



Theeas'porous (Gr. 077/077, theke, a 

 sheath ; a-iropa, spor'a, a seed). 

 Applied to fungi which have the 

 spores in thecse or cases 



The'codonts (Gr. 077*77, theke, a 

 sheath ; o5oi,s, od'ous, a tooth). A 

 tribe of extinct lizard-like reptiles 

 having the teeth implanted in 

 sockets. 



Theod'olite (Perhaps Gr. Oeao^ai, 

 thea'omai, I view ; SoAos, dol'os, 

 stratagem). A surveying instru- 

 ment for measuring horizontal an- 

 gles, or the angular distance be- 

 tween objects projected on the plane 

 of the horizon. 



Theog'ony (Gr. cos, Theos, God ; 

 yivo/j.ai, gin'omai, I am born). The 

 part of mythology which treats of 

 the genealogy of heathen deities. 



Theol'ogy (Gr. &eos, The'os, God ; 

 \o^os, log' os, a discourse). Divi- 

 nity ; the science of God and divine 

 things. 



The'orem (Gr. Qewpew, thcoreo, i see\ 

 In mathematics, a proposition to 



