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).
Chemical reaction
A process in which one substance is transformed into another. Thousands of different types of chemical reactions occur in the body and are essential to its structure and function
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Show more- Pott's disease An old term for tuberculosis of the spine that caused softening and collapse of the vertebrae, often…
- Placenta percreta A placenta that invades the uterine wall. In placenta percreta, the vascular processes of the chorion (the…
- Meniscus The word 'meniscus' comes from the Greek and refers to a crescent-shaped structure. Today a meniscus is…
- Silica The chief component of sand and a substance responsible for lung disease and cancer. Crystalline silica of…
- Genome, mitochondrial All of the genetic information contained in the chromosome of the mitochondrion, a structure located in the…
- Speed Common street name for a stimulant drug, especially for an amphetamine. Amphetamines have been used to treat…
- Saddle gall A sore on a horse caused by an ill-fitting saddle. Also called a saddle sore
- Acoustic neuroma A benign tumor that may develop on the hearing and balance nerves near the inner ear. The tumor results from…
- Nerve, eleventh cranial The eleventh cranial nerve is the accessory nerve. The twelve cranial nerves, the accessory nerve included…
- Folic acid One of the B vitamins that is a key factor in the synthesis (the making) of nucleic acid (DNA and RNA). A…
- Neuron, arcuate See: Arcuate neuron
- Tooth erosion Tooth erosion is a gradual loss of the normally hard surface of the tooth due to chemical, not bacterial…