USED IN NATURAL HISTORY. 



109 



OS'SIFICATIOW. fr. lat. os, bone ; fa- 

 cere, to make. The formation of 

 bone. The process by which bone 

 is formed. 



OS'SIFIED. fr. lat. os, bone. Con- 

 verted into bone. 



OSSIFUA'GA. fr. lat. ossa, bones \ fran- 

 gere, to break. Name of a kind 

 of vulture. 



OSSIFRA'GUS. Lat. Specific name 

 of an eagle. 



OSTEO'LOGT. fr. gr. osteon, a bone ; 

 logos, a discourse. That branch 

 of organography which treats of 

 bones. 



OS'TIOLUM. fr. lat. ostium, a door. 

 The orifice of the perithecium of 

 some fungaceous plants. 



OSTRA'CEA. A family of bivalves 

 which includes the oyster. 



OSTHA'CIOJT. fr. gr. ostrakon, a shell, 

 a scale. Generic name of the 

 trunk-fish. 



DS'TREA. Lat. An oyster. Name 

 of a genus of the family of os- 

 tracea. 



O'TION. fr. gr. otion, a small ear. 

 A genus of cirrhopods. 



OTIS. fr. gr. otis, a bustard. Gene- 

 ric name of the bustards. 



OTUS. fr. gr. otos, an owl ; formed 

 from ous, 6tos, an ear. Generic 

 name of a kind of owl. 



OuRANG-OuTAjro. From the Malay, 

 ourang, a reasonable being, a man, 

 and outang, wild. The wild-man. 

 A quadrumanous mammal. 



OUTCROP. The emergence of a 

 rock, in place, at the surface. 



OUTLIER. A hill or range of strata 

 occurring at some distance from 

 the general mass of formation to 

 which it belongs. 



O'VA Lat. plur. of ovum. 



OVA'RIA. Lat. plur. of ovarium. 

 O'VAHIES. Female organs which 



contain the ova or eggs. 

 OVA'RIAN. Relating to the ovary. 

 OVA'RIUM. Lat. An ovary. The 



omrmm of plants is the hollow 

 10 3 F 



case at the base of the pistil, en- 

 closing the ovules, or young seeds. 



O'VART. fr. lat. ovum, an egg. The 

 ovaries are the organs in which 

 the eggs are formed in oviparous 

 animals. A hollow case, enclos- 

 ing the ovules or young seeds, 

 which ultimately become fruit. 



O'VATE. Shaped like the longitudi- 

 nal section of an egg. 



OVATO - ACU'MINATE. Egg - shaped 

 and tapering to a point. 



OVATO - CYLINDRA'CEOUS. Egg-sha- 

 ped, with a convolute cylindrical 

 figure. 



OTATO- DELTOID. Triangularly egg- 

 shaped. 



OVATO-ROTUNDATE. Roundly egg- 

 shaped. 



OVA'TUS. Lat: Ovate, egg-shaped. 



OVERLAPPING. When the margin 

 of one thing lies upon that of an- 

 other, it is said to overlap. 



OVERLTING. When one stratum 

 lies over, or overlaps another, it 

 is said to be overlying. 



O'viDucT. fr. lat. ovum, an egg; 

 duco, I conduct. The tube which 

 conveys the ovum from the ovary. 



OVIGE'ROUS. fr. lat. ovum, an egg; 

 gero, I bear. Applied to parts 

 which contain, or support the egg. 



OVINE. Relating to sheep. 



OVI'PAROUS. fr. lat. ovum, an egg; 

 pario, I produce. Applied to ani- 

 mals whose young are born from 

 eggs. 



OVIPOS'ITOR. fr. lat. ovum, an egg ; 

 pono, I place. The instrument 

 by which insects deposit their 

 eggs. 



Ovis. Lat. A sheep. 



O'VOID. Oval. Egg-shaped. 



OVO-YIVI'PAROUS. fr. lat. ovum, egg ; 

 vivus, alive ; parere, to bring forth. 

 Animals that multiply by means 

 of eggs, which are hatched be- 

 fore they are laid. 



O'VULK. A young seed of a plant 

 contained in the ovarium. 



O'VULA. fr. lat. ovum, an egg. A 

 genus of gasteropods. 



