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).
Particle, alpha
A tiny mass of material composed of two protons and two neutrons. Alpha particles do not travel very far from their radioactive source. They cannot pass through a piece of paper, clothes or even the layer of dead cells which normally…
Read the definitionRandom terms
Show more- Pregnancy calendar A pregnancy calendar is a chronological depiction of changes in a pregnant woman and the embryo/fetus during…
- Oliva The olive, a structure in the brain
- Fear of money An abnormal and persistent fear of money. Sufferers experience undue anxiety even though they realize their…
- Uterine lining The inner layer of the uterus (womb); the cells that line the womb; anatomically termed the endometrium. This…
- Hydronephrosis Hydronephrosis: Distention of the kidney with urine. Due to obstruction of urine outflow (for example, by a…
- Bromine A brownish-red element that is a liquid at room temperature, dissolves in water, and has a bleach-like…
- Osteogenesis, electrically stimulated Bone growth caused by implanting electrodes in an area of bone and sending electrical current to them. This…
- Louse-borne typhus See: Typhus, epidemic
- Methionine An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, methionine provides…
- Karyotype A standard arrangement of the chromosome complement done for chromosome analysis. For example, a normal human…
- Phase, resting More appropriately called interphase. The interval in the cell cycle between two cell divisions when the…
- Hippocratic Oath One of the oldest binding documents in history, the Oath written by Hippocrates is still held sacred by…