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).
MHC
Major histocompatibility complex
Read the definitionRandom terms
Show more- Vaccination, H. flu This immunization is designed to prevent disease due to Haemophilus influenzae (H. flu), specifically…
- Hereditary angioedema A genetic form of angioedema. (Angioedema is also referred to as Quinke's disease.) Persons with it are born…
- Sense-strand RNA virus See: Positive-strand RNA virus
- IOP (intraocular pressure) The pressure created by the continual renewal of fluids within the eye. The normal IOP varies among…
- Ovulation The release of the ripe egg from the ovary. The egg is released when the cavity surrounding it (the follicle)…
- Talc A very soft, soapy-feeling mineral that is a silicate of magnesium, sometimes with small amounts of aluminum…
- Polony A tiny colony of DNA, about one micron in diameter. The word 'polony' is a contraction of 'polymerase…
- Hearing aid An instrument to help in hearing. There are four common styles of hearing aids. From largest to smallest…
- Thiamine Vitamin B1. Thiamine (vitamin B1) acts as a coenzyme in the metabolism of the body. Deficiency of thiamine…
- Gene, suicide A gene whose expression in a cell is lethal for that cell. Suicide genes form the basis of a strategy for…
- Rice genome The first commercially important plant to have its genome sequenced. This feat, completed early in 2001, is…
- Tritium Hydrogen-3, an isotope of hydrogen. Tritium is a long-lived weak emitter of radiation and can be easily…