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).
Melittin
The principal toxic component in bee venom. Melittin is a relatively short peptide consisting of 26 amino acids. It is a powerful cell lytic agent and binds rapidly to red blood cells causing the release of hemoglobin in the blood plasma…
Read the definitionRandom terms
Show more- Syndrome, Lennox-Gastaut A severe form of epilepsy that usually begins in early childhood and is characterized by frequent seizures of…
- Syndrome, ichthyosis-keratitis-deafness See Keratitis-ichthyosis-deafness syndrome
- Septum, interventricular The wall separating the lower chambers (the ventricles) of the heart. A hole in the interventricular septum…
- Memory, working Short-term (recent) memory. Working memory is a system for temporarily storing and managing the information…
- Megakaryocyte A giant cell in the bone marrow that is the ancestor of blood platelets.
- Cysticercus The larval form of any of the Taenia tapeworms. The plural is cysticerci. Infection with cysticerci is…
- PH, urine See: Urine pH
- Adventitia The outermost connective tissue covering of any organ, vessel, or other structure. For example, the…
- Phytonutrient The active health-protecting Currently, the terms 'phytonutrient' and 'phytochemical' are being used…
- Indifferent gonad In embryonic life, the gonad in males and females is initially identical. This gonad is said to be…
- Melanocyte A pigment-producing cell in the skin, hair and eye that determines their color. The pigment that melanocytes…
- Cyclic citrullinated peptide antibody See: Citrulline antibody