106 GLOSSARY. 
Osteodentine (Gr. osteon, a bone; L. dents, a tooth). 
—A substance intermediate in structure 
between dentine and bone. 
Osteogen (Gr. osteon, a bone; gennao, | produce).— 
The soft transparent tissue which in the 
formation of bone becomes ossified. 
Osteology (Gr. osteon, a bone ; logos, a discourse).— 
That branch of anatomy which treats of the 
skeleton of vertebrated animals. 
Palatine (L. palatum, the palate)—The name of a 
pair of bones in the skull, also of foramina in 
the same bones. 
Parachordal (Gr. fara, by, near ; chorde, a string).— 
A term applied to the embryonic cartilages 
in the posterior portions of the skull. 
Parapophysis (Gr. para, beside ; apophuo, | grow 
from).—The inferior transverse process of a 
vertebra, when two are present on each side 
of the centrum ; also called the capztular 
process from the fact that the head of the rib 
articulates here. 
Parasphenoid (Gr. para, beside ; sphen, a wedge; 
ezdos, shape).—A bone of the skull in some 
Vertebrata, forming portion, of the base 
between the basi-occipital and pre-sphenoidal 
region. 
Parietal (L. parzes, a wall). The name of a pair of 
bones in the skull. 
Parieto-mastoid suture.—The suture between the 
parietal bone and the mastoid portion of the 
temporal. 
