Bronchitis.  Inflammation of the larger bronchial tubes; a “cold” affecting the air passages.

Bunion.  An enlargement and inflammation of the first joint of the great toe.

Bursa.  A pouch; a membranous sac interposed between parts which are subject to movement, one on the other, to allow them to glide smoothly.

Callus (Lat. calleo, to be thick-skinned).  Any excessive hardness of the skin caused by friction or pressure.

Canal (Lat. canalis, a canal).  A tube or passage.

Capillary (Lat. capillus, hair).  The smallest blood-vessels, so called because they are so minute.

Capsule (Lat. capsula, a little chest).  A membranous bag enclosing a part.

Carbon Dioxid, often called carbonic acid.  The gas which is present in the air breathed out from the lungs; a waste product of the animal kingdom and a food of the vegetable kingdom.

Cardiac (Gr. kardia, the heart).  The cardiac orifice of the stomach is the upper one, and is near the heart; hence its name.

Carnivorous (Lat. caro, flesh, and voro, to devour).  Subsisting upon flesh.

Carron Oil.  A mixture of equal parts of linseed oil and lime-water, so called because first used at the Carron Iron Works in Scotland.

Cartilage.  A tough but flexible material forming a part of the joints, air passages, nostrils, ear; gristle, etc.

Caruncle (Lat. caro, flesh).  The small, red, conical-shaped body at the inner angle of the eye, consisting of a cluster of follicles.

Casein (Lat. caseus, cheese).  The albuminoid substance of milk; it forms the basis of cheese.

Catarrh.  An inflammation of a mucous membrane, usually attended with an increased secretion of mucus.  The word is often limited to nasal catarrh.

Cauda Equina (Lat., horse’s tail).  The collection of large nerves descending from the lower end of the spinal cord.

Cell (Lat. cella, a storeroom).  The name of the tiny miscroscopic elements, which, with slender threads or fibers, make up most of the body; they were once believed to be little hollow chambers; hence the name.

Cement.  The substance which forms the outer part of the fang of a tooth.

Cerebellum (dim. for cerebrum, the brain).  The little brain, situated beneath the posterior third of the cerebrum.

Cerebrum.  The brain proper, occupying the upper portion of the skull.

Ceruminous (Lat. cerumen, ear wax).  A term applied to the glands secreting cerumen, or ear wax.

Chloral.  A powerful drug and narcotic poison used to produce sleep.

Chloroform.  A narcotic poison generally used by inhalation; of extensive use in surgical operations.  It produces anaesthesia.

Chondrin (Gr. chondros, cartilage).  A kind of gelatine obtained by boiling cartilage.