Glossary

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Active ingredient The substance in a medicine which treats disease and its symptoms. See also Drug.
Agonist Compounds (e.g. drugs) that increase the body’s natural response.
AIDS Acquired Immune Deficiency Syndrome – a viral syndrome caused by the HIV
virus which is marked by severe loss of resistance to infection.
Allergen Substance which provokes an allergic reaction, e.g., pollen, fur, dust, some foods.
Ampicillin Antibiotic within the penicillin group (see Penicillin).
Anaesthetic Medicine used to induce numbness i.e. an absence of sensation – may be local (i.e.
effects limited to one specific area) or general (i.e designed to induce total loss of
consciousness)
Anatomy The study of the structure of animals or plants.
Angina Chronic disease involving pain in the chest.
Antacid Medicine used to treat indigestion – acts by counteracting excess acid in the
stomach which causes indigestion.
Antagonist Compounds (e.g. drugs) that block the body’s natural response.
Antibiotic A chemical such as penicillin that is produced by a microbe, like a bacteria, which
can kill other microbes.
Antibodies Proteins that appear in the blood in response to infection to combine with
invading microbes to neutralise their effect.
Antigen A substance that stimulates the body to produce antibodies.
Anti-histamine A medicine that counteracts the effects of histamine which causes allergic reactions
in the body. Used to relieve the symptoms of hayfever and other allergies.
Arthritis Chronic disease involving pain and inflammation of the joints.
Asthma

A disease where the airways are inflamed and narrowed resulting in difficulty
breathing. Symptoms include wheezing, chest tightness, an irritating cough
(especially at night) and shortness of breath.
Audit



Methodical review.