MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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).
Cell, helper
A type of T cell that participates in the immune response by recognizing foreign antigens and secreting substances called cytokines that activate T and B cells. Helper cells fall into two main classes: those that activate other T cells to…
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Show more- Tube, Fallopian The two Fallopian tubes, one on each side, transport the egg from the ovary to the uterus (the womb). The…
- Dermatofibrosarcoma protuberans The heart is reversed and is in the right side of the chest rather than in its normal location on the left…
- Encephalitis, LaCrosse One of the main types of encephalitis caused by an arbovirus in the US. An arbovirus is a virus that is…
- Disorders, myeloproliferative Malignant diseases of certain bone marrow cells including those that give rise to the red blood cells, the…
- Sample, random A group selected randomly, solely by chance
- Transaminase, serum glutamic pyruvic (SGPT) An enzyme that is normally present in liver and heart cells, and is released into blood when the liver or…
- Carcinoma of the tongue See: Tongue cancer
- Spider veins A group of widened veins that can be seen through the surface of the skin. Their wheel-and- spoke shape…
- Slapped cheek See: Fifth disease
- Nerve, tenth cranial The tenth cranial nerve, and one of the most important, is the vagus nerve. All twelve of the cranial nerves…
- Pyelonephritis in children Kidney infection in children. See: Urinary tract infection in children
- Red ear syndrome An unusual type of head pain in which the ear becomes red and burning. Attacks may be brought on by triggers…