GLOSSARY OF TECHNICAL TERMS 



337 



Hu'mor (Lat. ^#w0r, moisture). The 

 transparent contents of the eye- 

 ball. 



Hy'a-line (Gr. vaXos, glass). Glass- 

 like, resembling glass in trans- 

 parency. 



Hy'dro-gen. An elementary gaseous 

 substance, which, in combination 

 with oxygen, produces water. 



Hy'dro-pho'bi-a (Gr. u5wp, water, 

 and 06/3os, fear). A disease caused 

 by the bite of a rabid dog or 

 other animal. 



Im-mune' (Lat. immunis, exempt). 

 Exempt from certain diseases by 

 inoculation, by previous attack, 

 or by nature. 



In-ci'sor (Lat. inddere, to cut into). 

 Applied to the four front teeth 

 of both jaws, which have sharp, 

 cutting edges. 



In'cus (Lat. incus, an anvil). One 

 of the bones of the middle ear. 



In'di-an hemp. The common name 

 of Cannabis indica, an intoxicat- 

 ing drug known as "hasheesh" 

 and by other names in Eastern 

 countries. 



In-fec'tion (Lat. inficere, to stain). 

 The communication of disease 

 from one body to another, or 

 from one part to another part of 

 the same individual (auto-infec- 

 tion). The material conveying the 

 disease ; the disease-producing 

 agent. 



In-fe'ri-or ve'na ca'va (Lat.). The 

 vein carrying blood from the lower 

 part of the body into the heart. 



In'flam-ma'tion (Lat. in, in, and 

 ftamma, a flame). Tissue changes 

 accompanied with redness or 

 swelling of any part of the body, 

 with heat and pain. 



In-oc'u-la'tion (Lat. inoculare, to 

 ingraft). The introduction of 

 the germs of disease, generally 

 through the skin, so as to pro- 

 duce the disease. 



rris (Gr. I/HS, the rainbow). The thin 

 muscular ring which lies between 

 the cornea and crystalline lens, 

 giving the eye its special color. 



Jaun'dice (Fr. jaune, yellow). A 

 disorder in which the skin, eyes, 

 mucous membranes, and secre- 

 tions assume a yellowish tint, due 

 to the presence of bile pigments 

 in the blood. 



Lab'y-rinth (Gr. \aptpiv0os, a 

 maze). The internal ear, so 

 named from its many windings. 



Lach'ry-mal ap'pa-ra'tus (Lat. la- 

 crima, a tear). The organs for 

 forming and carrying away the 

 tears. 



Lens (Lat. lens, a lentil). A piece 

 of transparent glass or other sub- 

 stance so shaped as either to con- 

 verge or disperse the rays of light. 



Lig'a-ture (Lat. ligare, to bind). 

 A thread of some material used 

 in tying arteries or other parts. 



Lobe (Gr. Xo/36s, lobe of the ear or 

 liver). A round, projecting part of 

 an organ, as of the liver, lungs, or 

 brain. 



