Health Glossary

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

Organelle

A specialized structure within a cell that performs a particular function necessary for the cell’s survival, maintenance, or activity. Organelles…
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Organism

An individual living entity capable of carrying out the processes necessary to maintain life and, where applicable, reproduce. An organism…
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Oxidation

Oxidation is a chemical process in which a substance loses electrons, often accompanied by changes involving oxygen or other chemical…
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Pandemic

An epidemic that spreads across multiple countries or continents and affects a large number of people. A pandemic describes the…
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Papule

A papule is a small, solid, raised skin lesion without visible fluid or pus. Papules can result from inflammation or…
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Parenteral

Parenteral describes a route of administering a medicine or other substance by a method that bypasses the gastrointestinal tract, usually…
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Pharmacist

A pharmacist is a healthcare professional trained in the science and practice of medicines, including their preparation, dispensing, appropriate use,…
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