OSTRICH 



OVOVIVIFAKOTIS 



Ostrich, (os'trich). [Autruche, the French 

 name.]=Struthio: a 

 large land bird: with 

 short wings, the type 

 of Struthionidse. Ana- 

 logous to the rhea of 

 America, and the emu 

 and cassowary of Aus- 

 tralia. African O. = 

 Struthio camelus. 

 American 0.=Rhea. 



Ostrya, (os'tri-a). [Gk. 

 ostryos, scale. ] Hop- 4_| 

 hornbeam: a plant be- 

 longing to Corylacese. 



Osyekanis, An African 

 people. Ostrich. 



Otaria, (5-tar'i-a). [Gk. otarion, small ear.] 

 Sea-bear: a marine carnivorous animal, be- 

 longing to Phocidse, named from its exter- 

 nal ears. 0. JMt>a<a=Sea-lion. 0. priscilla 

 =C;ipe eared-seal. 



Othyl, (oth'il)=Acetyl, q.v. 



Otidse, (o'ti-de). [Otis, q.v. ; Gk. eidos, form.] 

 = Bustards: land birds belonging to Pressi- 

 rostres. 



Otis, (o'tis). [The Latin name.] Bustard: a 

 poultry-like bird the type of Otidae. 



Otoconium, (ot-6-k5'ni-um). [Gk. ous, ear; 

 konis, dust.] = Ear-dust : in the human 

 ear. 



Otocrane, (ot'o-krfm). [Gk. ous, ear; Cranium, 

 q.v.] The open bony chamber of the ear in 

 fishes. 



Otolicnos, (ot-o-lik'nos)=Galago : a half-ape, 

 found in Africa, remarkable for its acti- 

 vity. 



Otolithic, (pt-o-lith'ik). [Gk. ous, ear; lithos, 

 stone.] 0. stones: small bones in the ears of 

 fishes, and in auditory sacs of invertebrate 

 animals, cf. Otoconium. 0. vesicle: organ 

 of hearing in Medusae. 



Otoliths, (ot'6-liths). [Gk. ous, ear; lithos, 

 stone.] Small bones in the ear, contained 

 in the membranous labyrinth; a kind of 

 rattle in the organ of hearing of some fishes 

 and cephalopoda. 



Otopteris, (ot-op'ter-is). [Gk. ous, ear; pteron, 

 wing.] A plant known only by fossil re- 

 mains. 



Otozoum, (ot-o-zo'um). [Gk. otos, giant; zoon, 

 animal.] A frog-like animal, known only 

 by its fossil track, v. Lithichnozoa. 



Otter, (ot'ter). (Oter, the A.-S. name.]= 

 Lutra, q.v.; also- 

 Must e 1 a , q.v. 

 Canada 0.=Lutra 

 Canadensis. Marsh 

 O.=Mustela vison. 

 Sea . = Lutra 

 marina: int.r- 

 mediate between Otter, 



seals and otters. 0. s7tgej=Ancon sheep. 



Ottrelite, (ot'tre-llt)= Phy llite. 



Otus, (o'tus). [Gk. ous, ear.] Long-eared 

 owl: a bird belonging to Strigidse. 



Oudenodon, (o-den'6-don). [Gk. ouden, none; 

 odous, tooth. ] A genus of Dicynodoutia, q.v.: 

 an extinct reptile. 



Ounce, (ouns). [1. Once, the French name. 



2. L. uncia, 



twelfth part.] 1. 



= Felis. 2. A 



weight: in avoir- 

 dupois weight=: 



437J grains ; in 



troy and apothe- 

 caries weight = 



480 grains. 

 Ourang. v. Orang. Ounce. 



Ousaisthenics, ( o - sas - then ' iks ). [ Gk. 



ous, ear ; aisthenics, sensation.] Ear-seiisa- 



tions. 

 Oustitis, (os-ti-tis)=Simia jacchus = Hapale: 



a small American monkey. 

 Outcrop=Bassett: that part of an inclined 



stratum which comes to the surface. 

 Outer-strakes=Raised strakes. v. Strakea. 

 Ova, (6'va). [L. ovum, egg.] Plural of ovum, 



q.v. 

 Oval, (5'val). [L. ovum, egg.] Egg-shaped; 



elliptic. 

 Ovalbumin, (6-val-bu'min). [Ovum and 



Albumin, q.v.] A variety of albumin found 



in white of egg. 

 Ovaries, (6'va-riz). [Ovary, q.v.] Plural of 



ovary, q.v. 

 Ovary, (6'var-i). [Ovarium, the Latin word.] 



The cavity of a carpel, which contains the 



seeds; a general term for the enclosure of the 



fetus in viviparous animals. 0. of ./?s7i= 



Roe. 

 Oven-bird = Furnarius filiginosus: a small 



insectivorous bird found on river banks. 

 Over-grown=Hypertrophied. 

 Overshot- wheel. A water-wheel turned by the 



fall of water upon 



its circumference ; 



used for small 



streams of con- 

 siderable fall. 

 Overtones, (6'ver 



1 6 n z ). Harmonic 



sounds : higher 



notes also produced 



when any musical 



note is sounded, v. 



Tones. Overshot- wheel. 



Ovibos, (o-vi-bos). An animal belonging to 



Bovidae. O. mosc7is=Musk-ox. 

 Oviducts, (5'vi-dukts). [L. ovum, egg; ductus, 



duct.]=Fallopian tubes, q.v. 

 Oviforme, (6'vi-form)=Egg-like. 

 Ovipara. De Blainville's term for birds, 



reptiles, amphibia, and fishes. 

 Oviparous, (6-vip'a-rus). [L. ovum, egg; 



pario, I produce.] Bringing forth oifspring 



in a shell, which is detached from the parent 



before any considerable degree of develop- 

 ment: as with birds, insects, mollusca, 



arachnida, &c. 

 Oviposition, (6-vi-pd-zish'un). [L. ovum, egg; 



pono, I place.] Deposition of eggs, as by 



insects, &c. 

 Ovoviviparous, (o-vo-vl-vip'a-rus). [L. ovum, 



egg; vivus, alive; pario, 1 produce.] =Internal 



incubation: having the young in a shell, 



which is retained within the body until it is 



