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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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…
Read the definitionRandom terms
Show more- Electron microscopy A recording of the eye movements, usually done to confirm the presence of nystagmus. Electronystagmogram may…
- Cancer causes A greater-than-expected number of cancer cases that occurs within a group of people in a geographic area over…
- Onchocerciasis River blindness, a disease caused by a parasitic worm (Onchocerca volvulus) which is transmitted to persons…
- RNAi Abbreviation for RNA interference. See RNA interference
- Hiatus An opening, as in the diaphragm. When there is an unusually wide opening in the diaphragm, there can be a…
- Dual X-ray absorptometry See: DXA
- Doyle, Sir Arthur Conan See: Conan Doyle, Sir Arthur
- Fibrofolliculomas, trichodiscomas and acrochordons See: Birt-Hogg-Dube syndrome
- Differential diagnosis The process of weighing the probability of one disease versus that of other diseases possibly accounting for…
- Guinea worm disease A parasitic disease caused by infection with the guinea worm (Dracunculus medinensis), the largest parasite…
- Necrobiosis lipoidica diabeticorum A dull red raised area on the skin that evolves into a shiny scar with a violet border, most often on the…
- Breast aplasia Breast aplasia: A rare condition wherein the normal growth of the breast or nipple never takes place. They…