OST- 
The bony skull as distinguished 
from the cartilaginous or chondro- 
cranium (zoo, 
osteodentine (Bs'tBodén’ Sia n. (Gk. 
osteon, bon Is a tooth. 
A variety of dentine ehich closely 
approaches bone in structure (z00/.). 
osteodermis (ds'téédér’mis) 7. [Gk. 
bone; derma, ap A 
i is more less 
ony detnad” plate 
raha (Ss'tédjén’) 2. [Gk. o. 
bone ; genos, ype | 
hick alters and form e (ph 
osteogenesis ae jen’ésts) rae. 
StS, 
osteon, 
see ra 
osteon, bone; gene descent. ] 
Bone ‘format n (em 
metic (ae teojenét' k) a. [Gk. 
osteon, bone; genesis, descent. 
Sid fe or causing the formation of 
mob.). 
osteogenic > a. [Gk. 
ne ; rem s; offspring. | 
Bone-producing (phy. 
osteoid (ds’ aay a. “tGk. osteon, 
bone ; ei form.] Bone-like 
{anat.). 
osteology (is’ ae nm. [Gk. get 
bone ; Jogos, discourse.] That part 
of anatomy that deals with the 
2 fei nature, and development 
of bon 
osteop lato ney = tik) a. [Gk. 
osteon, plastos, moulded. ] 
Producing Se appl. certain cells 
emb.). 
(ds’ re ign nm. [Gk. 
osteon, oe = po = a por The 
ostiolum, 
ng Ge ‘Provided with ostioles 
ontiole (6s a a. [L. ostiolum, little 
eans of 
witch the blood enters the heart 
220 
OVA- 
from the pericardium ; the opening 
otie (5 ‘ike Wok 
a region of fia. pda capsule 
nat.), 
etapa (6tid’iim) #. [Gk. ous, ear] 
The otocyst of a Mollusc siti i 
5k0/nitim) Ms [Gk, ous, 
; Aonia, grain of sa One of 
minute ae “Ried in the 
internal ear (ana 
in certain fates (zool.). 
otocyst Ciieist) nm. [Gk. ous, e 
hystis, er.} A sac costae 
— and ool, supposed to 
ry (Z00 
ae vena nm. [Gk. ous, ear; 
dithos, stone.]| The calcareous par- 
ticle or plate-like eects found 
in the ear or the auditory organ of 
many animals (zoo/.). 
ucogeres per pe Mt. [Gk. 
; porpe,a me  detwes 
of enidabbiees on the ‘eeonbcella of 
Hydromedusae (zool. 
d’val) a. i ‘voun egg.] Egg- 
shaped 5 pert. egg. 
umin (5’ valba nin) [L. ovum, 
albumen, white of egg.] The 
chief constituent of white of egg 
(phys. 
ovarian ‘(oval rian) a. [L. ovarium, 
ovary.| Per#. an ovary. 
per tg Bie [L. biagir apt 
ary.| The vari ian tube o 
abet rs the ‘hee which else 
form the ovary (zool.). 
ovarium (6va'ritim) ~ [L. evarium, 
ovary. | An ovary. 
ovary (d'vari) 7. [L. ovarium, ovary.] 
The essential —_ reproductive 
organ (z00/.) ; enlarged portion 
lot the pistil or eynoeciam | ut 
e (Ovat) a. [L. m, egg] 
"Ee shaped. 
4 
acuminate,—afp/. an ovate 
aan with me very sharp point; 
ipl. —— She 
dal,—ovate, approach- 
ving alipeoid appl. leaves (G07.). 
vate- Jones eolate,—having a a form of 
es a intermediate between ovate 
mee 3 gholets (dot). 
