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).
Polyuria
The excessive passage of urine (at least 2.5 liters per day for an adult) resulting in profuse urination and urinary frequency (the need to urinate frequently). Polyuria is a classic sign of diabetes mellitus that is under poor control or…
Read the definitionRandom terms
Show more- Vaccine, rubella A vaccine designed to prevent rubella, or German measles. German measles was once seen merely as a child's…
- Sitophilus granarius See: Granary weevil
- Homozygote A person who has two identical forms of a particular gene, one inherited from each parent. For example, a…
- Corn A small calloused area of skin caused by local pressure irritating tissue over a bony prominence. Corns most…
- Prosthetics The art and science of developing artificial replacements for body parts. Depending on the type of…
- Seizure, clonic See: Clonic seizure
- Mite A tiny eight-legged creature belonging to the Order Acarina related to spiders and ticks. Some mites live…
- Alpha particle A tiny mass of material composed of two protons and two neutrons. Alpha particles do not travel very far from…
- Recessive A condition that appears only in individuals who have received two copies of a mutant gene, one copy from…
- Microbicide An agent that kills microbes, minute forms of life (e.g. bacteria, fungi, and protozoal parasites), some…
- Syndrome, atypical measles (AMS) Measles (AMS): An altered expression of measles, AMS begins suddenly with high fever, headache, cough, and…
- Edward B. Lewis See: Lewis, Edward B