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).
Open-label
A term used to describe the situation when both the researcher and the participant in a research study know the treatment the participant is receiving. Open-label is the opposite of double-blind when neither the researcher nor the…
Read the definitionRandom terms
Show more- Disease, alveolar hydatid See Nail-patella syndrome.
- Diesel exhaust particle A respirable particle produced during the compression ignition of diesel fuel. Diesel particles are composed…
- Perianal Located around the anus, the opening of the rectum to the outside of the body. Peri- is a prefix borrowed…
- Allergic contact eczema Also called allergic contact dermatitis, this is a red, itchy, weepy reaction where the skin has come into…
- Cancer, testicles Cancer of the male sex organ (testicle) that normally produces the hormone testosterone. One of the most…
- Milk, witch's See Witch's milk.
- Diabetes, insulin-dependent Also called type 1 diabetes. See Diabetes, type 1
- Bag, air A bag that fills with air, designed for frontal impact crashes, the kind of crashes which account for more…
- Addisonian anemia Anemia: A blood disorder caused by a lack of vitamin B12. Patients who have this disorder do not produce the…
- Diplopia, monocular Double vision (diplopia) in only one eye. The double vision persists when the other eye is covered. Monocular…
- Nipple absence Medically called athelia, this is a rare condition but it is common in certain conditions. Athelia tends to…
- Vaccination, HIB This immunization is designed to prevent diseases caused by Haemophilus influenzae type B (HIB), a bacteria…