Health Glossary

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

Climate Change

Climate change is a long-term change in the average conditions or variability of Earth’s climate, including temperature, rainfall, wind patterns,…
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Cochlea

The cochlea is a spiral-shaped structure in the inner ear responsible for converting sound-induced mechanical vibrations into electrical signals that…
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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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Confusion

A state in which a person has difficulty thinking clearly, understanding their surroundings, processing information, or maintaining normal awareness. Confusion…
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Congenital

Present at birth, whether caused by genetic factors, developmental processes, environmental exposures before birth, or a combination of factors. A…
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Contagious

Capable of being transmitted from one person to another, directly or indirectly, through an infectious agent. A contagious disease can…
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Corrosion

Corrosion is the deterioration of a material, especially a metal, caused by chemical or electrochemical reactions with its environment. A…
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Cortisol

Cortisol is a steroid hormone that helps regulate metabolism, immune activity, blood pressure, and the body’s response to stress. Cortisol…
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COVID-19

An infectious disease caused by infection with the virus SARS-CoV-2. COVID-19 primarily affects the respiratory system but can involve multiple…
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CT Scan

A medical imaging technique that uses X-rays and computer processing to produce detailed cross-sectional images of the inside of the…
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Cyst

A cyst is a closed sac-like structure containing fluid, semi-solid material, or other contents and usually lined by cells or…
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