URI- 



339 



URO- 



urinogenital (u'rinojgn'ital) a. [Gk. 

 ouron, urine ; gignesthai, to pro- 

 duce.] Connected with urinary 

 and genital systems (anat.}. 



urinogenital ridge, one of a pair 

 of ridges from which the urinary 

 and genital systems are developed 

 (embJ). 



urinogenital sinus, a bladder or 

 pouch in connection with the 

 urinary and genital systems in 

 many animals (zool.}. 



urite (u'rlt) n. [Gk. aura, tail.] An 

 abdominal segment in Arthropods 

 (zool.}. 



urn (urn) n. [L. urna, a pitcher.] 

 The theca of Mosses (dot.}. 



urns (urnz) n. plu. [L. urna, a 

 pitcher.] Ciliate bodies floating 

 in coeloinic fluid of Annulates 

 (zool.). 



urobilin (u'robflm) n. [Gk. ouron, 

 urine ; L. bilis, bile.] A yellow 

 pigment in urine (phys.}. 



urocardiac ossicle, a short stout bar 

 forming part of the gastric mill 

 in Crayfish (zool.}. 



urochord (u'rokord) n. [Gk. aura, 

 tail ; chorde, cord.] The notochord 

 when confined to the caudal region, 

 as in certain Tunicates (zool.}. 



urochrome (u'rokrom) n. [Gk. ouron, 

 urine ; chroma, colour.] A yellowish 

 pigment to which the ordinary 

 colour of urine is due (phys.}. 



urocoel (u'rosel) n. [Gk. ouron, 

 urine ; koilos, hollow.] An excre- 

 tory organ in the Mollusca, of 

 doubtful morphological nature 

 (zool.}. 



urocyst (u'rosist) n. [Gk. ouron, 

 urine ; kystis, hollow.] The 

 urinary bladder (zool.}. 



urodaeum (u'rode'um) . [Gk. ouron, 

 urine ; odaios, way.] The part or 

 chamber of the cloaca into which 

 the ureters and genital ducts open 

 (zool.}. 



urodelous (u'rode'lus) a. [Gk. oura, 

 tail ; delos, visible.] With per- 

 sistent tails ; appl. a certain division 

 of the Amphibians (zool.}. 



urogastric (u'rcigas'trik) a. [Gk. oura, 

 tail ; gaster, stomach.] The tail 

 or posterior portion of the gastric 

 region in certain Crustaceans 

 (zool.}. 



urogenital (u'rqje'n'ital), see urino- 

 genital. 



urohyal (u'rohlal) n. [Gk. oura, tail ; 

 hyoeides, Y-shaped.J A median 

 bony element in the hyoid arch 

 below the hypohyals (zool.}. 



uromere (u'romer) n. [Gk. oura, tail ; 

 meros, part.] An abdominal seg- 

 ment in Arthropods (zool.}. 



uroneme (u'ronem) n. [Gk. oura, 

 tail ; netna, thread.] One of tail- 

 like structures seen in some ciliate 

 Protozoa (zool.}. 



uropatagium (u'ropata'jium) n. [Gk. 

 oura, tail ; L. patagium, border.] 

 The membrane stretching from one 

 femur to the other in Bats ; one 

 of the plates at the side of the 

 anus in Insects (zool.}. 



uropod (u'ropod) n. [Gk. oura, tail ; 

 pous, foot.] Any of the abdominal 

 appendages in the Crayfish and 

 similar Crustaceans (zool.}. 



uropygial (u'ropij'lal) a. [Gk. orros, 

 end of os sacrum ; pyge, rump.] 

 Pert, the uropygium ; appl. oil 

 gland (zool.}. 



uropygium (u'ropij'ium) n. [Gk. 

 orros, end of os sacrum ; pyge, 

 rump.] The hump at the end of 

 a bird s trunk, containing the caudal 

 vertebrae, and supporting the tail 

 feathers (zool.}. 



uropyloric (u'ropilor'ik) a. [Gk. 

 oura, tail ; pyle, gate.] Pert. 

 posterior portion of crustacean 

 stomach (zool.}. 



urorectal (u'rorek'tal) a. [Gk. ouron, 

 urine ; rectus, straight.] Appl. em- 

 bryonic septum, which ultimately 

 divides the intestine into anal and 

 urogenital parts (emb.}. 



urorubin (u'roroob'Tn) n. [Gk. ouron, 

 urine; L. ruber, red.] The red 

 pigment of urine (phys.}. 



urosacral (u'rosa'kral) a. [Gk. oura, 

 tail ; sacrum, sacred.] Pert, caudal 

 and sacral regions of the vertebral 

 column (zool.}. 



urosome (u'rosom) n. [Gk. oura, 

 tail ; soma, body.] Tail region of 

 Fish ; the abdomen of an Arthro- 

 pod (zool.}. 



urostege (u'rostej) n. [Gk. oura, 

 tail ; stege, roof.] A ventral tail- 

 plate of a Serpent (zool.} also 

 urostegite. 



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