ORRHOSOLEN 



942 



ORTHODONTOSY 



Orrhosolen (or-o-so'-len) [bppog, serum ; aulrjv, a chan- 

 nel], i. A lymph-duct. 2. Sheath of a tendon. 



Orrhosolenitis (or-o-so-len-i' -tis). See Lymphangitis. 



Orrhymen (or-i' '-men) [bppog, serum ; v/ur/v, mem- 

 brane]. A serous membrane. 



Orrhymenitis (or-i-men-i' -tis) [bppdg, serum; vfirjv, 

 membrane ; trig, inflammation]. Inflammation of a 

 serous surface. 



Orrhymenoid (or-i ; -men-oid ) [bppdg, serum ; v/irjv, a 

 membrane; eldog, like]. Resembling a serous mem- 

 brane. 



Orrhymenous (or-i' '-men-us) [bppog, serum ; vfir/v, a 

 membrane]. Having a serous membrane. 



Orris (or' -is) [origin obscure]. The plant yielding 

 orris-root. O.-pea. See Issue-pea. O.-root, the 

 rhizome of Iris Jlorentina, containing a volatile oil 

 and various extractive principles. It is aromatic 

 and astringent, and is much used for flavoring and as a 

 dentifrice. Unof. 



Orrhotherapy (or-o-ther'-ap-e) [bppog, serum ; depa^eta, 

 therapy], i. Whey-cure. 2. The treatment of dis- 

 ease by the use of human or animal blood-serum con- 

 taining antitoxins. 



Orseillin (or-sa'-lin) [Fr., orseille, archil]. A coal-tar 

 color used in dyeing ; it is the sodium-sulphonate salt 

 of beta-naphthol-azo-naphthalene. It yields a fast and 

 full red, but is not bright red. It is also called rocellin, 

 rubidin, rauracienne. See Pigments, Conspectus of. 



Orsellinic Acid (or-sel-in'-ik). See Acid. 



Orthacanthous (orth -ak- an' -thus) [bpdSg, straight; 

 anavda, a thorn] . In biology, having straight thorns. 



Ortharthragra ( orth - arth - ra r - grah ) [ bpdog, true, 

 straight; apdpov, joint ; aypa, seizure]. True gout. 



Orthaxial (orth-aks' -e-al) [bpdog, straight ; axis, axis]. 

 In biology, having a straight vertebral axis. 



Orthiauchenus (orth-e-atvk' -en-us) [bpdiog, upright ; 

 avxrjv, neck]. Lissauer's term for a skull in which 

 the angle formed between the radius fixus and the line 

 joining the basion and the inion is between 38 and 



49° 



Orthin (orth'-in) [bpdog, straight]. A substance pre- 

 pared by combining hydrazin with paroxybenzoic acid. 

 Its hydrochlorate has been found actively antipyretic ; 

 an overdose causes collapse and profuse sweating. 

 Dose gr. v, twice daily, given with great caution. 

 Unof. See also Hydrazin. 



Orthiochordus (orth-e-o-kord'-us) [bpdiog, upright; 

 X°O^Vi cord]. Lissauer's term for a skull in which the 

 angle formed between the radius fixus and the line 

 joining the hormion and the basion is between 33. 2° 

 and 52 . 



Orthiocoryphus (orth-e-o-kor' '-if-us) [bpdiog, upright ; 

 Kopvcbij, head]. Lissauer's term for a skull in which 

 the angle formed between the radius fixus and the 

 line joining the bregma and the lambda is between 

 29 and 41 °. 



Orthiodontus (orth-e-o-don' -tus) [bpdiog, upright ; bSoi'g, 

 a tooth]. Lissauer's term for a skull in which the 

 angle between the radius fixus and the line joining the 

 alveolar and subnasal points is between 88° and 121 . 



Orthiometopus (oi-th-e-o-met-o' -pus) [bpdtog, upright ; 

 fieTUTTov, forehead]. Lissauer's term for a skull in 

 which the angle between the radius fixus and the line 

 joining the bregma and the nasal point is between 

 47 and 6o°. 



Orthiopisthius (orthe-o-pis'-the-us) [bpdiog, upright; 

 b-iallfv, behind]. Lissauer's term for a skull in which 

 the angle between the radius fixus and the line joining 

 the lambda and the inion is between 84 and 95 . 



Orthiopisthocranius (orth-e-o-pis-tho-kra'-ne-us) [bp- 

 diog, upright ; biviadev, behind ; Kpavinv, skull]. Lis- 

 sauer's term for a skull in which the angle formed be- 



tween the radius fixus and the line joining the lambda 

 and the opisthion is between 107 and 119°. 



Orthioprosopus (orth-e-o-pros-o' -pus) [bpdiog, upright ; 

 wpoauTTov, face]. Lissauer's term for a skull in which 

 the angle formed between the radius fixus and the 

 line joining the nasion and the alveolar point is be- 

 tween 89. 4 and ioo°. 



Orthiopylus (orth-e-op'-il-us) [bpdiog, upright; ttvXt), 

 gate]. Lissauer's term for a skull in which the angle 

 formed between the radius fixus and the line joining 

 the middle point of the anterior margin of the fora- 

 men magnum and the middle point of the posterior 

 margin of the foramen magnum is between 15.5 and 

 24 . 



Orthiorrhinus (orth-e-or-i'-nus) [bpdiog, upright 

 nose]. Lissauer's term for a skull in which the angle 

 formed between the radius fixus and the line joining 

 the nasion and the subnasal point is between S 7 . 5 - 

 and 98 . 



Orthiuraniscus (orth-e-u-ran-is' -kus) [bpdiog, upright; 

 ovpavioKog, canopy]. Lissauer's term for a skull in 

 which the angle formed between the radius fixus and 

 a line joining the posterior border of the incisor fora- 

 men and the alveolar point is between 40 and 6o°. 



Ortho- (or'-tho-) [bpdbg, right, straight]. A prefix de- 

 noting right, straight, normal, or true. In chemistry 

 the prefix indicates the normal compound ; among 

 derivatives of the benzol ring it refers to those formed 

 by the substitution of two adjacent hydrogen atoms. 



Orthocelic (or-tho-se' -lik) [bpdbg, straight ; sm'/ia, 

 belly]. In biology, applied to birds that have the 

 eight intestinal folds close to and parallel with each 

 other (Tubinares, Steganopodes and Erodii), as distin- 

 guished from the Cyclocelic (Felargi, Raptor es and 

 Laridce.) 



Orthocelous {pr-tho-se' '-/us) [bpdbg, straight ; Kot'/la, 

 cavity]. Having the intestinal canal straight. 



Orthocephalic ( or- tho - sef- al'- ik ) [bpdog, straight ; 

 KE(j)a?i7}, head]. Pertaining to orthocephaly. 



Orthocephalism (or-tho-sef'-al-izm). Synonym of 

 Orthocephaly. 



Orthocephalous (or-tlio-sef'-al-us) [bpdog, straight; 

 K£<pa7J], head]. Having a straight head or face. 



Orthocephaly (or-iho-sef'-al-e ) [bpdog, Straight; keq- 

 alrj, head]. The condition of having a skull with a 

 vertical index of from 70. i° to 75 . 



Orthochorea (or-tho-ko-rc' -ah ) [bpdog, straight ; \opeia, 

 dance]. Choreic movements in the erect posture. 



Orthochromatic (pr-tho-kro-maf '-ik ) [bpdog, straight ; 

 Xpioua, color]. A term used in photography to de- 

 note correctness in the rendering of colors. 



Orthocolon (or-tho-ko'-lon) [bpdog, straight; kuXw, 

 limb]. Straightness of a limb from tonic muscular 

 spasm. 



Ortho-cresol (pr-tho-kre f -sol) [bpdbg, straight ; Kpiag, 

 flesh; oleum, oil], C 7 H 8 0. One of the forms of cre- 

 sol, q. v. It occurs in small amounts in urine. 



Orthocyllosis (or-tho-sil-o'-sis) [bpdog, straight ; 

 ?,(.)Gig, crippling]. Ankylosis of a limb in the straight 

 position. 



Orthodactylous {or-tho-dak' -til-us) [bpdog, straight; 

 rJd/cTuAoc, a finger]. In biology, having straight 

 digits. 



Orthodolichocephalous (or - tho-do - lik - o-sef- al- us) 

 [bpd6g, straight; doAi^^g, long; la^a'/.i/, head], lin- 

 ing a long and straight head ; having a vertical index 

 between 70.I and 75 , and a transverso-vertical i 



between 70 and 74. 9 



Orthodontia (or-tho-don'she-ah) [bpd6g, straight; 



offofc, tooth]. The correction of irregularities "t tfl» 



teeth. 

 Orthodontosy (or -tho- don' ■ to- se) [bpdog, straight! 



