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).
Synaptic cleft
The tiny space between two nerve cells across which the neurotransmitter acetylcholine diffuses
Read the definitionRandom terms
Show more- Pedophobia An abnormal and persistent fear of babies and children. Sufferers experience anxiety even though they realize…
- Disease, Addison Long-term underfunction of the outer portion of the adrenal gland. In medical terms, chronic insufficiency of…
- Myalgia Pain in a muscle; or pain in multiple muscles. Myalgia means muscle pain. There are many specific causes of…
- Myometrium The muscular outer layer of the uterus.
- Aspiration pneumonia Pneumonia: Infection of the lungs due to aspiration (the sucking in of food particles or fluids into the…
- Rhinoplasty Rhinoplasty: Plastic surgery on the nose, known familiarly as a nose job. Rhinoplasty is a facial cosmetic…
- Hornet sting Stings from hornets and other large stinging insects such as bees, yellow jackets and wasps can trigger…
- Prostate cancer gene BRCA2 A gene that normally acts to restrain the growth of cells but which, when mutated, is responsible for a…
- Para-esophageal hiatal hernia Hiatal hernias are categorized as being either para-esophageal or sliding. Para-esophageal hernias are…
- Arrector pili A microscopic band of muscle tissue which connects a hair follicle to the dermis. When stimulated, the…
- Lobstein's disease Osteogenesis imperfecta type I. An inherited, generalized connective tissue disorder featuring bone fragility…
- Illness, chronic An illness that has persisted for a long period of time. It is a continuing disease process