TRA- 



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transitlonal (tranzTsh'onal) a. [L. 

 transire, to go across.] Appl. epi- 

 thelium occurring in ureters and 

 urinary bladder, renewing itself by 

 mitotic division of the third and 

 innermost layer of cells (phys.}. 



translocation (tranz'loka'shun) n. 

 [L. trans, across ; locus, place.] 

 Diffusion, as of food material 

 (Phys.). 



transmedian (tranzme'dlan) a. [L. 

 trans, across ; medhis, middle.] 

 Pert., or crossing the middle plane ; 

 appl. muscles (anat.). 



transmutation theory, the theory 

 that one species can evolve from 

 another (biol.). 



transpalatine (tranz'pal'atin) n. [L. 

 trans, across ; palatus, the palate.] 

 A cranial bone of Crocodiles, con- 

 necting pterygoid with jugal and 

 maxilla (zoo/.). 



transpiration (transplra'shun) n. [L. 

 trans, across ; spirare, to breathe.] 

 Exhalation of vapour through pores 

 (phys.}, or stomata (pot.). 



transpyloric plane, the upper of the 

 imaginary horizontal planes divid- 

 ing the abdomen into artificial 

 regions (anat.). 



transversal (tranzveYsal) a. [L. 

 trans, across ; vertere, to turn.] 

 Lying across or between, as a trans- 

 versal wall (oot.). 



transverse (tranz'vSrs) a. [L. trans, 

 across ; vertere, to turn.] Lying 

 across or between, as artery, colon, 

 ligament, process (anat.). 



transversum (tranzveYsum) n. [L. 

 trans, across ; vertere, to turn.] In 

 most Reptiles, a cranial bone ex- 

 tending from pterygoid to maxilla 

 (zoo/.). 



trapeziform (trape'ztform) a. [Gk. 

 trapezion, a small table ; L. forma, 

 shape.] Trapezium-shaped (zoo/.). 



trapezium (trape'zium) n. [Gk. tra- 

 pezion, a small table.] The first 

 carpal bone, at the base of the first 

 metacarpal (zoo/.) ; the greater 

 multangular bone ; a portion of the 

 pons Varolii (anat.). 



trapezius (trape'zlus) n. [Gk. tra- 

 pezion, a small table.] A broad, 

 flat, triangular muscle of the neck 

 and shoulders (anat.). 



trapezold (trape'zoid, trap'ezoid) a. 



[Gk. trapezion, a small table ; eidos, 

 form.] Trapezium-shaped ; appl. 

 ligament, nucleus, ridge (anat.). 



traumatropism (tromat'roplzm) n. 

 [Gk. trauma, a wound ; trope, a 

 turning.] Sensitiveness to wounds 

 (oot.). 



trefoil (tre'foil) n. [L. trifolius, three- 

 leaved.] A flower or leaf with three 

 lobes (dot.). 



tremelloid (tr&n'e'loid) a. [L. tre- 

 mere, to tremble.] Gelatinous in 

 substance or appearance (6ot.). 



triactinal (trlak'tlnal) a. [Gk. tria, 

 three ; aktis, ray.] Three-rayed. 



triadelphous (tri'adeTfus) a. [Gk. 

 tria, three ; adelphos, brother.] 

 Having stamens united into three 

 bundles by their filaments (oot.). 



triaene (trfen) n. [Gk. triaina, a 

 trident] A somewhat trident- 

 shaped spicule (zoo/.). 



triandrous (trlan'drus) a. [Gk. tria, 

 three ; aner, man.] Having three 

 stamens (oot.). 



triangle (triang'gl) n. [L. triangu- 

 laris, three-sided.] A three-sided 

 structure or area ; appl. various 

 structures (anat.). 



trianthous (trlan'thus) a. [Gk. tria, 

 three ; anthos, flower.] Having 

 three flowers (dot.). 



triarch (trfark) n. [Gk. tria, three ; 

 arche, beginning.] Having three 

 xylem bundles uniting to form the 

 woody tissue plate of root (pot.). 



triarticulate (trfartik'ulat) a. [L. tres, 

 three ; articulus, a joint.] Three- 

 jointed (zoo/.). 



Triassic (tnas'ik) a. [Gk. tria, three.] 

 A geological period of the second- 

 ary or Mesozoic group ; the seventh 

 of the thirteen rock - systems 

 (Pal.). 



triaster (trias'ter) n. [Gk. tria, three ; 

 aster, star.] Three chromatin 

 masses resulting from tripolar 

 mitosis, as in cancer cells (cyt.). 



triaxon (triak's6n) n. [Gk. tria, three ; 

 axis, axle.] A sponge spicule with 

 three axes (zoo/.). 



tribracteate (tribrak'teat) a. [L. tres, 

 three ; bractea, a thin plate of 

 metal.] With three bracts (dot.). 



trica (trfka) n. [F. tricoter, to knit.] 

 A lichen apothecium with ridged 

 spherical surface (6ot.). 



