Medical Dictionary

Health Glossary

Demystifying medical language. Browse or search for clear, human-centered explanations of common medical terms.

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Cancer

A disease where abnormal cells grow uncontrollably and may spread to other parts of the body. There are many different…

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Capillary

A capillary is the smallest type of blood vessel in the body. Capillaries connect arteries to veins and allow oxygen,…

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Carbohydrate

A major nutrient that provides energy for the body. Common carbohydrate sources include: Related:

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Cardiovascular Disease

A group of diseases affecting the heart and blood vessels. Examples include: Related:

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Cardiovascular Disease

Diseases affecting the heart and blood vessels. Examples include: Related:

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Cardiovascular System

The body system made up of the heart and blood vessels. It is responsible for: Related:

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Cell

A cell is the smallest structural and functional unit of a living organism. Every part of the human body is…

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Central Nervous System

The part of the nervous system made up of the brain and spinal cord. It controls: Related:

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Chemotherapy

A type of treatment that uses medicines to destroy or slow the growth of cancer cells. Chemotherapy may also affect…

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Chills

A sensation of coldness often accompanied by shivering. Chills commonly occur with: Related:

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Cholesterol

A fatty substance found in the blood. The body needs some cholesterol, but very high levels can increase the risk…

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Chronic

A condition that lasts for a long time, often months or years. Chronic illnesses may require ongoing treatment, monitoring, or…

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Circulation

The movement of blood through the body. Good circulation helps deliver: to body tissues and organs. Related:

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Circulation

The movement of blood throughout the body. Circulation helps deliver: It also helps remove waste products. Related:

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Collagen

Collagen is the body’s most abundant structural protein and provides strength and support to many tissues. Collagen is found in…

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Comedone

A comedone is a blocked hair follicle caused by a buildup of sebum and dead skin cells. Comedones are the…

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Complication

An additional problem that develops during or after an illness or treatment. Complications may make recovery more difficult. Related:

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Confusion

Difficulty thinking clearly or understanding surroundings. Confusion may result from: Related:

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Congenital

Present at birth. Some congenital conditions develop before a baby is born. Related:

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Connective Tissue

Connective tissue is one of the four main types of tissue in the body and provides support, protection, and structural…

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Contagious

Able to spread from one person to another. Contagious illnesses may spread through: Related:

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Cosmetic residue

Cosmetic residue refers to small amounts of makeup, sunscreen, moisturisers, or other skincare products that remain on the skin or…

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COVID-19

An infectious disease caused by the SARS-CoV-2 virus. It can affect: Symptoms may range from mild illness to severe breathing…

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CT Scan

A medical imaging test that uses X-rays and computers to create detailed pictures of the inside of the body. CT…

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