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).
Parathyroid gland
A gland that regulates calcium, located behind the thyroid gland in the neck. The parathyroid gland secretes a hormone called parathormone (or parathyrin) that is critical to calcium and phosphorus metabolism. Although the number of…
Read the definitionRandom terms
Show more- Gibbon heart-lung machine The first heart-lung machine. Named for the American physician John H. Gibbon who built it in 1937. This…
- Dry eye A deficiency of tears. The main symptom is usually a scratchy or sandy feeling as if something is in the eye…
- Chyle A fluid consisting of a mixture of lymphatic fluid (lymph) and chylomicrons that has a milky appearance…
- Hereditary amyotrophic lateral sclerosis See: Familial ALS
- Transmissible spongiform encephalopathy One of a number of progressive neurodegenerative disorders in animals and humans caused by similar…
- Laser-assisted in situ keratomileusis A kind of laser eye surgery designed to change the shape of the cornea to eliminate or reduce the need for…
- Facial nerve The facial nerve is the seventh cranial nerve. It is a mixed nerve that has fibers both going out and coming…
- Mastectomy, simple Removal of one or both breasts, but not the lymph nodes
- Emergency medical technician A person trained in the performance of the procedures required in emergency medical care. You are most likely…
- Tumor, primary See: Primary tumor
- Gallbladder absence This condition, also known as agenesis (failure of development) of the gallbladder, occurs in approximately…
- Red ear syndrome An unusual type of head pain in which the ear becomes red and burning. Attacks may be brought on by triggers…