GLOSSARY 



497 



following diagram; the light ray AC, instead of following the 

 straight line AB, is bent on striking the surface of the dense 

 medium, thereby being 

 bent from its direct path 

 toward C. 



Re'nal. [From the Lat. ren, 

 rents , the " kidney . " ] Per- 

 taining to the kidneys. 



Ren'nin. [Rennet.] The milk- 

 curdUng enzyme which 

 constitutes the active prin- 

 ciple of rennet. 



Resil'iency. [From the Lat. 

 re, " back," and silere, to 

 " leap."] The act of resil- 

 ing, leaping, or springing 

 back ; the act of rebound- 

 ing. 



Respira'tion. [From the Lat. 



res'piro, to " breathe frequently, 

 comprising two acts, 

 or breathing out. 



Res'tiform. [From the Lat. Testis, a " cord, rope," and/orwa, " form."] 

 In anatomy denoting a part of the medulla oblongata, called the 

 restifonn bodj'. 



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. 



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. 



The function of breathing, 

 inspiration, or breathing in, and expiration, 



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

 above the coccyx, so named because it was supposed to protect the 

 orgarxs contained in the pehas, which were offered in sacrifice and 

 considered sacred. 

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