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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Tay-Sachs disease
A genetic metabolic disorder caused by deficiency of the enzyme hexosaminidase A (hex-A) that results in a failure to process a lipid called GM2 ganglioside that accumulates in the brain and other tissues. Abbreviated TSD. The classic form…
Read the definitionRandom terms
Show more- Periaortic Around the aorta. The aorta is the great artery that comes from the left ventricle of the heart and delivers…
- Microsomia Too small a body. A child with microsomia has significant undergrowth. The prefix 'micro-' is derived from…
- Amino acid One of the 20 building blocks of protein. The sequence of amino acids in a protein and, hence, the function…
- Recombination The trading of fragments of genetic material between chromosomes before the egg and sperm cells are created…
- ADH (antidiuretic hormone) A peptide molecule that is released by the pituitary gland at the base of the brain after being made nearby…
- Dysplasia, bronchopulmonary See: Bronchopulmonary dysplasia
- Hypercalciuria Excess calcium in the urine
- Immunization, influenza Influenza: See Immunization, flu
- Visual field The entire area that can be seen when the eye is directed forward, including that which is seen with…
- Blood pressure The blood pressure is the pressure of the blood within the arteries. It is produced primarily by the…
- Systole, premature See: Extrasystole
- Weighing, hydrostatic See: Underwater weighing