MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
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Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
Platelet
An irregular, disc-shaped element in the blood that assists in blood clotting. During normal blood clotting, the platelets clump together (aggregate). Although platelets are often classed as blood cells, they are actually fragments of…
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Show more- Vasculitis Vasculitis: Plural: vasculitides. A general term for a group of diseases that feature inflammation of the…
- Mule In the drug trade, a person who transports a drug by internally concealing it. Also called a body packer…
- Large saphenous vein The larger of the two saphenous veins, the principal veins that run up the leg superficially (near the…
- Gland, endocrine See: Endocrine gland
- Ileoscopy Use of a flexible instrument (a 'scope') to examine the ileum which is the lowest part of the small…
- Small calorie (Calorie) A type of lung cancer in which the cells appear small and round under the microscope. Also called oat cell…
- Neurologist A doctor who specializes in the diagnosis and treatment of disorders of the nervous system
- Red corpuscles Red corpuscles are cells that carry oxygen in the blood. They are also called red blood cells or 'RBCs.'
- Angiotensin A family of peptides (smaller than proteins) that act as vasoconstrictors to narrow blood vessels
- Single upper palm crease See: Simian crease
- Leukemia, chronic phase of Leukemia, chronic phase of: A stage in which there are few blast cells in the blood or bone marrow, and few…
- Stroke index A cardiodynamic measure. Stroke volume is the amount of blood the left ventricle ejects in one beat, measured…