260 GLOSSARY 



Pter'ygoid. [From the Gr. pteron, a " wing," and eidos, " form," " resem- 

 blance."] Wing-like. 



Pty'alin. [From the Gr. pti/alon, "saliva."] A ferment principle in saliva, 

 having power to convert starch into sugar. 



Pu'bes, gen. Pu'bis. [Lat.] The external part of the generative region; 

 the portion of the os innominatum forming the front of the pelvis. 



Pul'monary. [From the Lat. pulmo, pi. pulmones, the " lungs."] Relating 

 to the lungs. 



Pylor'ic. Pertaining to the pylorus. 



Pylor'us. [From the Gr. pyle, a "gate" or "entrance," and ouros, a 

 " guard."] The lower orifice of the stomach, furnished with a circular 

 valve which closes during stomach digestion. 



Pyrex'ia. [From the Gr. pyresso, (fut.) pyrexo, to "have a fever."] Eleva- 

 tion of temperature; fever. 



Quad'riceps. [From the Lat. quatuor, " four," and caput, the " head."] A 

 term applied to the extensor muscle of the leg, having four heads or 

 parts. 



Ra'dius. [Lat. a " rod," the " spoke of a wheel."] The outer bone of the 



fore-arm, so called from its shape. 

 Rale. [From the Fr. rdler, to "rattle in the throat."] A rattling, bubbling 



sound attending the circulation of air in the lungs. Different from the 



murmur produced in health. 

 Rec'tus. [Lat.] Straight. 



Re'nal. [From the Lat. ren, renis, the "kidney."] Pertaining to the kidneys. 

 Retic'ular. [From the Lat. reticulum, a " small net."] Resembling a small 



net. 

 Ret'iform. [From the Lat. rete, a " net," and forma, " form."] Having the 



form or structure of a net. 

 Ret'ina. [From the Lat. rete, a " net."] The most internal membrane of 



the eye; the expansion of the optic nerve. 

 Ri'ma Glot'tidis. [Lat. rima, a "chink" or "cleft."] The opening of the 



glottis. 

 Ru'gae. [Lat. pi. of ruga, a "wrinkle."] A term applied to the folds or 



wrinkles in the mucous membrane, especially of the stomach and vagina. 



Sa'crum. [Lat. neut. of sacer, "sacred."] The large triangular bone above 

 the coccyx, so named because it was supposed to protect the organs con- 

 tained in the pelvis, which were offered in sacrifice and considered 

 sacred. 



Sag'ittal. [From the Lat. sagitta, an " arrow."] Arrow-shaped. 



Sal'ivary. Pertaining to the saliva, the fluid secreted by the glands of the 

 mouth. 



Saphe'nous. [From the Gr. saphes, " manifest."] A name given to the two 

 large superficial veins of the lower limbs. 



Saponifica'tion. [From the Lat. sapo, saponis, "soap," and facio, to 

 " make."] Conversion into soap. 



