OMPHALONEUROSTREPSIS 



896 



ONOMATOPOIESIS 



7J>q, navel; vevpov, cord; 'pfi^ic,, rupture]. Laceration 

 of the umbilical cord. 



Omphaloneurostrepsis {om -fal- o - nu - ro - strep' - sis) 

 [bfupaXor;, navel ; vevpov, cord ; o-rperpig, a turning 

 about]. Torsion of the umbilical cord. 



Omphalopagus {om-fal-op' ' -ag-us) [bp,tya7i6<;, navel ; 

 ■KTfyvvvai, to make fast] . A better term for the fetal 

 monstrosity known as Xiphopagus, q. v. 



Omphalophlebitis {om-fal-o-fle-bi / -tis)[bpfya'k6Q, navel; 

 (j>Mil>, vein ; trig, inflammation]. Inflammation of the 

 umbilical vein. 



Omphalophyma (om-fal-o-fi' -ma)i) . Synonym of Om- 

 phaloncus. 



Omphaloproptosis {om - fal '- o - prop -to r - sis) [6/^>a/.dc, 

 navel ; TrpdiTTcxng, a falling forward]. Abnormal pro- 

 trusion of the navel. 



Omphalopter {om-fal-op'-ter) \bp,^a\6q, navel ; b-KTr/p, 

 a viewer]. A double convex lens. 



Omphaloptic (om-fal-op' -tik) [6/^a/Wc, navel ; onriKog, 

 of seeing]. The same as Omphalopter. 



Omphalorrhagia {om-fal-or-a' -je-ah) [bfi^aMq, navel ; 

 pqyvvvai, to burst forth]. Hemorrhage from the 

 umbilicus. 



Omphalorrhea {om-fal-or-e'-ah)\b^ahog, navel; pola, 

 a flow]. An effusion of lymph at the navel. 



Omphalorrhexis {om-fal-or-eks' -is) \_bp<pal6q, navel;' 

 prtfig, rupture]. Rupture of the navel, or of the navel- 

 string. 



Omphalos (om'-fal-os^bfupaMg, navel]. The umbilicus. 



Omphalosite (om-fal'-o-sit) [6//0a/l<$c, navel ; clrog, 

 nourishment]. An embryo or fetus dependent for its 

 imperfect growth in the uterus upon another embryo 

 or fetus, usually well-developed, that supplies the cir- 

 culation of blood for both by means of extensive and 

 intimate anastomoses of the umbilical and placental 

 vessels. 



Omphalosoter (om-fal-o-so'-ter) [b/u.(pa,?i6g, navel ; aurr/p, 

 preserver] . An instrument for replacing a prolapsed 

 funis. 



Omphalotacterium {om-fal-o-tak-te' -re-um) [bfi^alog, 

 navel; raaaeiv, to arrange]. An instrument for re- 

 placing a prolapsed umbilical cord. 



Omphalotaxis (om-fal-o-taks'-is) \bp.§ak6q, navel; 

 rdacsLV, to arrange]. Reposition of the prolapsed 

 funis. 



Omphalotome {om f -fal-o-tom) \_bfi<t>al6g, navel ; ro/ur/, 

 a cutting]. An instrument for dividing the umbilical 

 cord. 



Omphalotomist (om-fal-ot'-o-mist) [b/iipaMc;, navel; 

 To/ifj, a cutting]. A midwife. 



Omphalotomy (om-fal-of -o-me) [bufyaAoq, navel ; rofiij, 

 a cutting]. The obstetric separation of the cord at 

 the umbilicus. Also, an obsolete term for obstetrics. 



Omphalus {om'-fal-us) [bn<j>al6g, navel]. See Om- 

 phalos. 



Onanism {o' -nan-izni) [from Onan, the son of Judah]. 

 I. Incomplete coitus. 2. Masturbation, or other per- 

 version of the sexual instinct. 



Onanist {o'-nan-ist) [from Onan, the son of Judah]. 

 One who practises onanism. 



Onchosphaera, Onchosphere {ong f -kos-ef'-rah, ong'~ 

 kos-fer) [6y/coc, bulk, mass; afacpa, a sphere]. In 

 biology, a stage in the development of certain platode 

 worms. 



Oncograph {ong f -ko-graf) [bynoq, swelling ; ypatyei.v, to 

 record]. The registering portion of an oncometer ; a 

 plethysmograph. 



Oncology (ong-kol' -o-je) [fiy/coc, tumor ; \6yog, science]. 

 The science or study of tumors. 



Oncome {on'-kum) [ME., on, on; ME., cumen, to 

 come]. The oncoming, attack, or onset of a disease 

 or illness. 



Oncometer {ong-kom' -et-er) [oy/coc, mass ; juirpov, meas- 

 ure]. An instrument for measuring the size of a 

 tumor or the volume of an organ, especially for 

 measuring the size of any variable organ, as the 

 kidney. 



Oncosis {ong-ko'-sis) [oy/coc, tumor]. The presence of 

 a tumor ; the diseased state characterized by the 

 growth of tumors. 



Oncothlipsis {ong-ko-thlip'-sis) \oymq, tumor ; d/ifiq, 

 pressure]. Pressure caused by a tumor. 



Oncotomy (ong-kot'-o-me) [oy/coc, tumor ; tout], a cut- 

 ting]. The lancing or opening of a tumor or abscess. 



One {wun) [ME., one, one]. A single unit or indi- 

 vidual. O.-eyed, cyclopean, having but one eye. 

 O. -hundred Day Disease, the Japanese term for 

 whooping-cough. O. -sided, developed better upon 

 one side than upon the other. O.-year Ulcer, the 

 Arabic synonym of Aleppo Boil. 



Oneirodynia (o-ni-ro-din'-e-afi) [oveipog, a dream; 

 bfibvr), pain]. Disquietude of the mind during 

 sleep ; painful dreaming ; nightmare. O. activa, 

 somnambulism. 



Oneirogmus [on-i-rog 1 '-mus) loveipuy/idq, an effusion 

 during sleep]. Emission of semen during sleep. 



Oneirogonorrhea, Oneirogonos (on-i-rog-on-or-e'-ak, 

 on-i-rog' -on-os). Synonyms of Oneirogmus. 



Oneirology {on - i - rol'- - je) \_bveipoq, dream ; ?6yog, 

 science]. The science or scientific view of dreams. 



Oneironosus (on-i-ron'-o-sus) [bvetpoq, dream ; voaoq, 

 disease]. Disorder manifesting itself in dreams; 

 morbid dreaming. 



Onion {un'-ytm) [L. , unto, an onion] . A garden 

 plant, Allium cepa ; also its esculent bulbous root. 

 Onion-syrup and onion-poultices are much used in 

 domestic medicine ; the juice is stimulant, expectorant, 

 and diuretic. Unof. 



Onobaio (on-o-ba'-yo) [Nat. Obock]. An arrow-poison 

 used by the natives of Obock. 



Onomatology {on-o-mat-ol' -o-je) \bvojia, name ; Xoyog, 

 science]. The science of nomenclature ; the forma- 

 tion of names. 



Onomatomania {on-o-mat-o-ma' -ne-ah) [bvofia, name; 

 fiavia, mania]. Functional derangement of speech, 

 of which five varieties are described: 1. A pow- 

 erful effort to recall some word. 2. An irresistible 

 impulse continually to repeat a word, by which the 

 patient seems perplexed. 3. The patient attaches 

 some peculiar and dreadful meaning to a commonplace 

 word. 4. The patient attaches talismanic significance 

 to certain words, which he repeats as a safeguard. 

 5. The patient is impelled to spit out some word, like 

 a disgusting morsel. A word is a complexus of imageS| 

 localized in certain centers of the cerebral cortex, the 

 images being partly auditive, partly visual, partly mo- 

 tor. " Onomatomania is characterized by irregular 

 action of one or several verbal images, resulting from 

 some functional disturbance of the corresponding cen- 

 ter. " In simple onomatomania, the patient is possessed 

 with the idea of recovering a word that escapes him. 

 The word is familiar ; its significance can be given; 

 the place where read or the time when heard can he 

 given, but the word cannot be recalled. Articulate 

 speech may be at fault. The patient knows the word, 

 sees it written before him ; but cannot articulate it. 

 He may utter a synonym or a similar word. In associ- 

 ated onomatomania, words acquire a peculiar or pre- 

 ponderant meaning. 



Onomatopoiesis {on-o-mat-o-poi-e'-sis) \bvoua, name; 

 iroiteiv, to make]. The extemporaneous formation of 

 words by the insane. Words so formed arc generally 

 meaningless, or incorrect, but are sometimes quite UM 



