258 GLOSSARY. 



Oxida'tion. The action of oxidizing a body; that is, combining it with oxy- 

 gen, the result of which combination is an oxide. 



Ox'ygen. A tasteless, odourless, colourless gas, forming part of the air, 

 water, etc., and supporting life and combustion. 



Pal'mitm. A solid, crystallizable substance of fat, found in the nervous tissue. 



Pal'pebra, pi. Pal'pebrae. [Lat.] The eyelid. 



Pan'creas. A compound secreting gland ; one of the accessory organs of 



nutrition. The sweetbread of animals. 

 Papil'lae. [Lat. pi. of papilla, a " nipple," a " pimple."] Minute eminences 



on various surfaces of the body. 



Paraglob'ulin. A proteid substance of the blood plasma. 

 Pari'etal. [From the Lat. paries, parietis, a " wall."] Pertaining to a wall. 

 Parot'id. [From the Gr. para, "near," and ous, otos, the "ear."] The large 



salivary gland under the ear. 

 Parturi'tion. [From the Lat. par/urio, parturitum, to " bring forth."] The 



act of bringing forth, of giving birth to young. 

 Par Va'gum. [Lat.] The " wandering pair." A term sometimes applied 



to the pneumogastric nerves. 



Patel'la. [Lat. "a little dish."] A small, fowl-shaped bone ; the knee-pan. 

 Pec'toral. [From the Lat. pectus, pectoris, the "breast."] Pertaining to the 



breast or chest. 



Ped'icle. [From the dim. of Lat. pes, pedis, a "foot."] A stalk. 

 Pel'vic. [From the Lat. pelvis, a " basin."] Pertaining to the pelois, the 



basin or bony cavity forming the lower part of the abdomen. 

 Pep'sin. [From the Gr. pepfo, to " digest."] A ferment principle in gastric 



juice, having power to convert proteids into peptones. 

 Pep'tone. [From the Gr. pepto, to " digest."] A term applied to proteid 



material digested by the action of the digestive juices. 

 Pericar'dium. [From the Gr. peri, "about," "around," and kardia, the 



" heart."] The serous membrane covering the heart. 

 Perichon'drium. [From the Gr. peri, "about," "around," and chondros, a 



" cartilage."] The serous membrane covering the cartilages. 

 Per'ilymph. [From the Gr. peri, "about," " around," and the Lat. lympha, 



" water."] The fluid in the osseous, and surrounding the membranous, 



labyrinth of the ear. 

 Perios'teum. [From the Gr. peri, "about," " around," and osteon, a " bone."] 



The membrane covering the bones. 

 Peripheral. [From the Gr. peri, " about," " around," and phero, to " bear."] 



Pertaining to the periphery or circumference; that which is away from 



t.hfi centre and towards the circumference. 

 Peristal'sis. [From the Gr. peristelld, to "surround," to "compress."] 



Peristaltic action. A term applied to the peculiar movement of the 



intestines, like that of a worm in its progress, by which they gradually 



propel their contents. 

 Peritone'um. [From the Gr. periteino, to "stretch around," to "stretch all 



over."] The serous membrane lining the walls and covering the con- 

 tents of the abdomen. 



