GLOSSARY. 237 
Mea’ tus (passage) : a channel or canal. 
Me’ diad (medius, middle) : toward the middle. 
Me’ dial: pertaining to the middle. 
Me dias ti’ num (standing in the middle) : the space between the lungs, 
including the heart and other organs. 
Med’ ullary (medulla, marrow) : pertaining to the marrow within the 
bones. 
Men in ge’ al (menigx, membrane) : pertaining to the membranes of 
the brain or cord. 
Men’ tal (mentum, chin) : pertaining to structures about the chin. 
Mes enter’ ic (mesos, middle; enteron, intestine): pertaining to the 
mesentery. 
Mes’ en tery: a fold of the peritoneum joining parts of the intestine 
to the dorsal part of the abdominal cavity. 
Met’ a (beyond). 
Mes enceph’alon (mesos, middle; encephalon, brain) : the mid-brain, 
consisting of the corpora quadrigemina and crura cerebri. 
Met enceph’alon: the pons Varolii and cerebellum. 
Mo di’ o lus: the central pillar or axis of the cochlea. 
Mon’ ophy dont (moos, single; phuein, to grow; odous, tooth): 
having only one set of teeth during life. 
Mon otre’ mata (monos, single; tremos, hole) : the lowest subclass of 
mammals. The intestinal and urinary products are voided through 
one opening as in birds; duck bill and spiny ant eater. 
Mor phol’ 0 gy (morpha, form; logos, discourse) : that part of biology 
dealing specially with form and structure. 
My elenceph’alon (myelos, marrow; encephalon, brain) : the medulla 
oblongata. 
Mo’ tor (movere, to move): a name given nerves stimulating muscles. 
New’ ral (neuron, nerve): pertaining to a nerve. 
New’ rone: a nerve cell with all its processes. 
Nw’ clei: plural of nucleus. 
Nu’ cleus (nuwx, a nut): the essential part of every cell; also applied 
to a definite bunch of nerve cells. 
Ob’ tu rator: the name of the large foramen in the innominate bone 
or of structures near to it. 
Oc cip’ital (ob, against; caput, the head): relating to structures in 
the region of the back part of the head. 
Oc’ ular (oculus, the eye) : pertaining to the eye. 
O don’ toid (odous, tooth; oid, like): relating to the tooth-like process 
of the axis. 
Oid: a common suffix derived from Greek cidos and signifying like. 
O lec’ ran on (olea, elbow; kranion, head): process of the ulna. 
