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OUR BODIES AND HOW WE LIVE 



Con'junc-ti'va (Lat. com-, together, 

 and jungere, to join). A thin 

 layer of mucous membrane which 

 lines the eyelids and covers the 

 front of the eyeball, thus joining 

 the latter to the lids. 



Con-ta'gion (Lat. com-, together, and 

 tangere, to touch). The process 

 by which a specific disease is com- 

 municated from one person to 

 another, either by contact or by 

 means of an intermediate agent. 

 Also the specific germ, or virus, 

 which causes a communicable 

 disease. 



Con'trac-til'i-ty (Lat. com-, together, 

 and trahere, to draw). The prop- 

 erty of a muscle which enables 

 it to draw its extremities closer 

 together. 



Con'vo-lu'tions (Lat. com-, together, 

 and volvere, to roll). Tortuous 

 foldings, as those of the external 

 surface of the brain. 



Co-bYdi-na'tion. The manner in 

 which different organs of the body 

 are made to work together. 



Cor'ne-a (Lat. cornu, a horn). The 

 transparent hornlike substance 

 which covers a part of the front 

 of the eyeball. 



Cor'pus-cle (Lat. corpuscuhim, dim. 

 of corpus, a body). A small body 

 or particle. 



Cri'coid (Gr. /cpkos, a ring, and etSos, 

 form). A cartilage of the larynx 

 resembling a seal ring in shape. 



Crys'tal-line lens (Gr. K-p&rraXXos, 

 ice, crystal). One of the refrac- 

 tive media of the eye ; a double- 



convex body situated in the front 



part of the eyeball. 

 Cu'ti-cle (Lat. cuticula, dim. of cutis). 



Scarfskin ; the epidermis. 

 Cu'tis (Lat. cutis, the skin). The 



true skin, also called the dermis. 



De-gen'er-a 't ion ( Lat . de, from, down, 

 and genus, race). A morbid proc- 

 ess in the structure of an organ 

 by which its tissues are converted 

 into some inert substance. 



Deg'lu-ti'tion (Lat. deglutire, to 

 swallow). The act of swallowing. 



Den'tine (Lat. dens, a tooth). The 

 hard substance which forms the 

 greater part of the tooth ; ivory. 



De-o'dor-ant (Lat. de, without, and 

 odorare, to smell). A substance 

 which removes or conceals offen- 

 sive odors. 



Dex'trin (Lat. dexter, right). A 

 soluble carbohydrate into which 

 starch is converted by diastase 

 or dilute acids or by dry heat. 



Dex'trose' (Lat. dexter, right). 

 Grape sugar. 



Dis'in-fect'ants. Agents used to 

 destroy the germs of disease, fer- 

 mentation, and putrefaction. 



Dislo-ca'tion (Lat. dis-, contrary to, 

 and locare, to place). An injury 

 to a joint in which the bones are 

 displaced or forced out of their 

 sockets. 



Dis-sec'tion (Lat. dis-, apart, and 

 secare, to cut). The cutting up of 

 an animal to learn its structure. 



Du'o-de'num (Lat. duodent, twelve 

 each). The first division of the 



