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).
Dehydration
Dehydration: Excessive loss of body water. Diseases of the gastrointestinal tract that cause vomiting or diarrhea may, for example, lead to dehydration. There are a number of other causes of dehydration including heat exposure, prolonged…
Read the definitionRandom terms
Show more- Immunity, active Immunity, active: The production of antibodies against a specific agent by the immune system. Active immunity…
- Bone, collar A horizontal bone above the first rib that makes up the front part of the shoulder. The collarbone, also…
- Abdominal hysterectomy Surgical removal of the uterus (a hysterectomy) done through an incision made in the abdominal wall. As…
- Fear of having a malformed child An abnormal and persistent fear of bearing a malformed child is termed teratophobia. A phobia is an…
- Serratus One of several muscles of the back and thorax. that have interdigitating slips that ressemble the notches on…
- Congenital stationary night blindness An inherited eye disorder that is not progressive ('stationary') and principally affects the rod…
- Menstrual cramps Menstrual cramps: Cramping in the lower abdomen, usually in the first or second day of the menstrual cycle…
- Sleep restriction therapy A type of therapy in which the number of hours of sleep are restricted. Sleep restriction therapy is used in…
- Rhinophyma Pronounced (ryno-fee-ma), a bulbous enlarged red nose and puffy cheeks (like those of the old comedian W.C…
- SiRNA Abbreviation for small inhibitory RNA, a short sequence of RNA which can be used to silence gene expression
- Ciguatoxin A seafood toxin that is acquired by eating fish that have consumed toxic single-celled marine organisms…
- Bone scan A technique to create images of bones on a computer screen or on film. A small amount of radioactive material…