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).
Facial nerve
The facial nerve is the seventh cranial nerve. It is a mixed nerve that has fibers both going out and coming in (both efferent and afferent fibers). It supplies the muscles of facial expression. Paralysis of the facial nerve causes a…
Read the definitionRandom terms
Show more- Hormone, T3 Triiodothyronine, a thyroid hormone. The number 3 is usually in subscript
- Nadir The lowest point as, for example, the lowest blood count after chemotherapy, the lowest concentration of a…
- Dystonia, idiopathic torsion A form of dystonia known as early-onset torsion dystonia (also called generalized torsion dystonia) begins in…
- Hypercapnia More than the normal level of carbon dioxide in the blood. Hypercapnia is as opposed to hypocapnia and…
- Polonies See: Polony
- Cerebrospinal fluid CSF. A watery fluid, continuously produced and absorbed, which flows in the ventricles (cavities) within the…
- Hereditary mutation Mutation: A heritable change in the DNA of a gene or chromosome in a cell destined to become an egg or a…
- Herniated disc Herniated disc: Rupturing of the tissue that separates the vertebral bones of the spinal column. The center…
- ADH (antidiuretic hormone) A peptide molecule that is released by the pituitary gland at the base of the brain after being made nearby…
- Proposita A female through whom a family medically comes to light (is first ascertained). Also called the proband or…
- Aneurysm, cardiac Outpouching of an abnormally thin portion of the heart wall. An aneurysm is a localized widening (dilatation)…
- Nasogastric Referring to the passage from the nose to the stomach. A nasogastric tube is one that is passed through the…