OMO 



289 



OOG 



the spleen to the cul-de-sac of the 

 stomach. 



omo-hyoid, a., om'-o-Tii'-oyd (Gr. 

 omos, a shoulder ; and hyoid}, a 

 muscle which passes across the 

 side of the neck from the scapula 

 to the hyoid bone, consisting of 

 two fleshy bellies, united by a 

 central tendon. 



omphalic, a., timf-al'ik (Gr. 

 omphalos, the navel, or navel- 

 string), pert, to the navel : omph- 

 alocele, n., omf-dttd-sel (Gr. 

 kele, a swelling or tumour), 

 rupture or hernia of the navel : 

 oniphalotomy, n., omf'-al-ot'-om-i 

 (Gr. tome, a cutting), the opera- 

 tion of cutting the umbilical cord 

 or navel-string. 



Omphalobium, n., timf-d-lob'-i-urn 

 (Gr. omphalos, a navel ; lobos, a 

 pod), a genus of pretty plants, 

 Ord. Connaracese : Omphalobium 

 Lamberti, Idm-bert'-i (of Lambert, 

 after Lambert, a botanist), a 

 species said to furnish zebra- 

 wood. 



omphalode, n., ^mf f >al'od, also 

 omphalodium, n., timfial-od'-i' 

 Urn (Gr. omphalos, the navel ; 

 hodos, the way ; some say eidos, 

 resemblance), in bot. t the central 

 part of the hilum of a seed through 

 which nourishing vessels pass : 

 omphaloid, a., timf'-al-dyd (Gr. 

 eidos, resemblance), resembling 

 the navel. 



omphalo-mesenteric, a., timf<al>o- 

 m&s'en-ter'ik (Gr. omphalos, the 

 umbilicus or navel ; and mesen- 

 teric), applied to vessels passing 

 from the umbilicus to the mesen- 

 tery at an early stage of the 

 foetus, and forming the first 

 developed vessels in the germ. 



OnagracesB, n. plu., on'a'gra^se-e 

 (L. dnagrus, a wild ass), the 

 Evening Primrose family, an 

 Order of plants, whose species 

 are common in gardens. 

 Oncidium, n., tin-sid'-i-tim (Gr. 

 ongkos, a swelling, a tumour), 

 an extensive genus of very hand- 

 T 



some plants, Ord. Orchidacese 

 so named because the species have 

 warts, tumours, or other excres- 

 cences at the base of the labellum: 

 Oncidium altissimum, alt-is'-sim. 

 um (L. altissimus, very high 

 from altus, high), a species which 

 throws up from fifteen to twenty 

 flower spikes, producing as many 

 as 2000 flowers of a yellow colour 

 spotted with brown : 0. lancean- 

 um, lam^e-an'-tim (L. lancednum, 

 having a lance from lancM, a 

 lance, a spear), a much prized and 

 singular flower : 0. nubigenum, 

 nub -zdj < en-urn (L. nubtgZna, cloud- 

 born from nubes, a cloud ; 

 gemtus,})orii, produced), a species 

 growing on the Andes at an eleva- 

 tion of 14,000 feet: 0. papilio, 

 pap'il'4>d (L. pdpilW, a butterfly), 

 bears a striking resemblance to a 

 butterfly on the wing. 

 Onobrychis, n., tin-db'-rik-ts (Gr. 

 onos, an ass ; brucho, I gnaw), a 

 genus of plants, Ord. Legumin- 

 osse, Sub-ord. Papilionacese, also 

 called 'Sainfoin,' cultivated for 

 the feeding of cattle. 

 onychia, n., tin-tlc'-i-a (Gr. onux, 

 a claw, a nail ; onuclios, of a 

 nail), a disease of the nail ; a 

 whitlow. 



Onygena, n., tin-idf-Zn-a (Gr. onux, 

 a claw, a hoof; genos or gonos, off- 

 spring), a genus of Fungi, many 

 of whose species are found in 

 autumn on the dung, feathers, 

 and hoofs of particular animals. 

 oogonium, n., d'dg-dn'-i-um, or 

 dg-on'-i-um, oogonia, n. plu., 

 d f 'dg-dn f -i'd (Gr. odn, an egg ; 

 gonos, offspring), in bot., bodies 

 which are reckoned as equivalent 

 to archegonia or sporangia in 

 Fungi, in which, after the action 

 of the antheridia, a fertilized 

 spore is formed, called an 

 ' oospore ' ; a kind of ovarian 

 sac containing spores, which 

 become oospores or zoospores 

 when set free : oogones, n. plu, 

 O'Og'-on-ez, same as 'oogonia.' 



