Amnion. A membrane enveloping the foetus and the liquid.
Amputation. The operation of cutting off a limb.
Amyloid degeneration. Alteration in the texture of organs, which resembles wax or lard.
Amyloids. Foods composed of carbon and hydrogen; as sugar, starch, etc.
Anæmia. Privation of blood. Lack of red corpuscles in the blood.
Anasarca. Dropsy attended with bloating all over the body.
Anatomy. The science of the structure of the body.
Anesthetic. An agent that prevents feeling in surgical operations, and in some diseases of a painful nature.
Angina (pectoris). Violent pain about the heart, attended with anxiety and difficult breathing.
Animalcula, Animalcule. An animal so small as to be invisible, or nearly so, to the naked eye.