Constipation (Lat. con, together, and stipo, to crowd close). Costiveness.

Consumption (Lat. consumo, to consume). A disease of the lungs, attended with fever and cough, and causing a decay of the bodily powers. The medical name is phthisis.

Contagion (Lat. con, with, and tango or tago, to touch). The communication of disease by contact, or by the inhalation of the effluvia of a sick person.

Contractility (Lat. con, together, and traho, to draw). The property of a muscle which enables it to contract, or draw its extremities closer together.

Convolutions (Lat. con, together, and volvo, to roll). The tortuous foldings of the external surface of the brain.

Convulsion (Lat. convello, to pull together). A more or less violent agitation of the limbs or body.

Coördination. The manner in which several different organs of the body are brought into such relations with one another that their functions are performed in harmony.

Coracoid (Gr. κόραξ, a crow, εἶδος, form). Shaped like a crow’s beak.

Cornea (Lat. cornu, a horn). The transparent horn-like substance which covers a part of the front of the eyeball.

Coronary (Lat. corona, a crown). A term applied to vessels and nerves which encircle parts, as the coronary arteries of the heart.