

ONOSMODIUM 



897 



ONYM 



losmodium (on-oz-mo' -de-um) \bvoq, an ass ; bouij, 

 smell ; eldoc, form]. A genus of boraginaceous 

 plants. O. hispidum, O. virginianum, a plant of 

 the genus of Boraginaceae, growing in the Eastern 

 and Middle States ; it has been used in gonorrhea and 



ses of the bladder. Unof. 

 t Oogenesis (on - to -Jen' - es - is) [wv, bvroc, existing ; 

 birth]. The development of the individual 

 ell into the mature being. 

 Cytogenetic (on-to-jen-ef -ik) [d>v, bvrov, existing; yev- 

 wf, birth]. Pertaining to ontogenesis. See also 

 it ion. 

 '. togeny (on-toj' -en-e) [y>v, being; yevrjq, producing], 

 n biology, the history of the development of the in- 

 . ividual ; it is a short recapitulation of the history of the 

 , ace, or phylogeny, q. v.; that is, every animal passes 

 n to its descendants by inheritance, not only its or- 

 anization at an adult stage, but also its own course of 

 evelopment. (Lang.) 

 C tographic (on-to-graf '-ik) [<I>r, being ; ypa<peiv, to 



•'rite]. Of, or pertaining to, Ontography. 

 C tography (on- tog' -ra-fe) [dw, being; ypa<peiv, to 

 rite]. A description of beings, their nature and 

 ssence. 

 C toidic ( on-to-id'-ik) \y>v, orrof , being ; it/us, the di- 

 iding or division]. In biology, Weismann's term for 

 le ontogenetic stages of the idioplasm from the hered- 

 ary substance or germ-plasm forming the first onto- 

 lic stage and preceding the division of the egg-cell 

 > the natural death of the organism. 

 C ologic (on-to-loj / -ik)[iov,bv-oq,he.mg; /.oyoq, science]. 



ertaining to ontology. 

 Q ology (on-tol' -o-je)\iiv , bvroc, being ; '/oyoq, science], 

 he metaphysical inquiry into the nature and essential 

 uality of beings, or of being in the abstract. Accord- 

 lig to Flourens, one of the divisions of physiology. 

 j. Biology, the study of life proper. B. Ontology, the 

 'udy of living beings, which he divides into Neon- 

 \logy and Paleontology. O., Medical, a view which 



d'gards diseases as distinct entities, 

 iphin (on'-u-fin), C.^H^NO^. A substance ob- 

 jined from the rings of a species of worm, the Onu- 

 \ is tubicola. It forms a white mass resembling pipe- 

 iv, dissolving easily in water. 

 chatrophia (on-ik-at-ro'-fe-ah)\bw!-, nail ; arpo^ta, 



ophy]. Atrophy of the nails. 

 chauxe, Onychauxis (on-ik-a-oks'-e, on-ik-awks' 'is) 

 :e nail ; attjr/, increase]. Increased growth or 

 pertrophy of the nail, usually with alteration in tex- 

 "e, color, and shape. 

 0; chia (o-nik'-e-ah)\bwi-, 

 il]. Inflammation of 

 a matrix of the nail. 

 :e Paronychia. O. 

 aligna. See Onyxitis. 

 simplex, onychia with- 

 t much ulceration, with 

 the nail and its 

 )lacement by a new 

 '-■ 

 m chisterion (on-ik-is-te' - 

 j - on) [invxinrijpiov, a 

 jil-knife]. An instru- 

 nt used for cutting the 



9 :hitis (on- ik-i'-tis) 

 , "wf , nail ; iriq, inflam- 

 tJon]. Inflammation of 

 tail. 

 J r :hium ( o-nik'-e-um ) 

 . a little claw ; 

 i. of oiaf , a nail, claw : //., Onychia]. In biology, 

 57 



Chronic Onychia. 



a little claw ; specifically the small terminal append- 

 age of the tarsus of many insects, between the two 

 claws proper. 



Onycho- (on'-ik-o-) \bvv^, nail]. A prefix denoting 

 connection with, or relation to, the nails. 



Onychoclasis (on-ik-ok' -las-is) [bw^, nail ; K/Aaiq, a 

 breaking]. Breaking of the nail. 



Onychocline (on-ik-ok' -lin-e) \bw~, nail; k'/avt], a bed]. 

 The bed of a nail. 



Onychocryptosis (on -ik-o - krip - to*- sis) [oi-v-;, nail ; 

 KfyvTTroQ, hidden]. Ingrowing of a nail. 



Onychogryposis (on-ik-o-gri-po' '-sis) [foof, nail ; ypv- 

 TTuoic, curvature]. A thickened, ridged, and curved 

 condition of the nail. It sometimes takes the well- 

 known form of ingrowing nail. 



Onychohelcosis (on-ik-o-hel-ko / -sis) \ow^, nail ; e'aku- 

 oiq, ulceration]. Ulceration of the nail. 



Onychoid (on'-ik-oid) [wif, nail; ado? like]. Resem- 

 bling a nail. Having a texture like that of the 

 nails. 



Onycholepra (on - ik - o - lep f - rah) [ovv^, nail; AETrpa, 

 leprosy]. Leprosy affecting the nails. 



Onycholysis (on - ik - ol'- is - is) \bw^ , nail ; ?.iaiq, a 

 loosening]. Loosening of the nail. 



Onychomycosis (on-ik-o-mi-ko / -sis) \bw^ , nail ; uvktjq, 

 fungus] . A parasitic disease of the nails of men and 

 the hoofs of the horse, mule, etc. In man it is termed 

 dry caries. It is caused by the fungus Ackorion kera- 

 tophagus, or other similar parasite. O. circinata. 

 Same as O. trichophytina. O. favosa, favus of 

 the nails. O. tonsurans. Same as 0. trichophytina. 

 O. trichophytina, ringworm of the nails, due to the 

 parasite Trichophyton tonsurans. 



Onychonosuc (on-ik-on'-o-sus) \bw^ , nail ; voaoq, dis- 

 ease]. Any disease of the finger-nails or toe-nails. 



Onychopathic (on-ik-o-path' -ik) [6wf , nail ; Tzatioc, 

 disease]. Pertaining to disease of the nails. 



Onychophagy (on-ik-off' '-aj-e) [drrf, nail ; cpayeiv, to 

 eat]. The practice of biting the nails. 



Onychophthora (on - ik - off'- tko - rah). Synonym of 

 Onychosis. 



Onychophyma (on-ik-o-fi' -mah) [oiTf , nail ; <twua, 

 growth]. A morbid degeneration of the nails, some- 

 times observed in leprosy and in tertiary syphilis. 



Onychophyton (on-ik-off' -it-on). Synonym of Onycho- 

 mycosis. 



Onychoptosis (on-ik-op-to / -sis) [bwi- , nail ; izTuciq, a 

 falling]. The falling off of the nails. 



Onychorrhiza (on-ik-or-i'-zah) [bwi;, nail ; pi^a, root]. 

 The root of the nail. 



Onychosarcoma (on-ik-o-sar-ko / -mak)[bw^ ,nail; crapi; , 

 flesh ; b/ua, tumor]. A fleshy outgrowth from a nail. 



Onychosarcosis (on-ik-o-sar-ko'-sis) [oii'^, nail ; aapa- 

 uaiq, the growth of flesh]. The development of an 

 onychosarcoma ; an onychosarcoma. 



Onychosis (on-ik-o'-sis) [bw$, nail ; vogoc, disease]. 

 Any disease of the nails. O. arctura, ingrowing nail. 

 O. seline, white spots on the nails. O. tinea, ony- 

 chomycosis. 



Onychostroma (on-ik-os-tro / -mah) [owf, nail ; arpuua, 

 mattress]. The matrix or sensitive tissue of the 

 finger, forming the bed of the nail. 



Onychostromelcosis (on-ik-os-trom-el-ko' -sis). Syno- 

 nym of Onychohelcosis. 



Onychothlasis (on-ik-oth' -las-is) \bw$, nail ; fi?Aoic , a 

 crushing]. Crushing of the nails. 



Onychyphosis (on-ik-if-o' -sis) \bvvi; , nail ; i<j>f], web]. 

 A disease of the toe-nails, consisting of thickened, 

 horny layers of the epidermis accumulated beneath 

 the nail, raising it from its bed, and sometimes alter- 

 ing its growth. 



Onym (on'-im) [bvopa, a name]. In biology, the 



