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
Read the definitionRandom terms
Show more- Hemiplegia, alternating See: Alternating hemiplegia of childhood
- Strep, group A A well-known strain (a type) of streptococcus (strep) bacteria that can cause strep throat and common skin…
- Methadone A synthetic opiate. The most common medical use for methadone is as a legal substitute for heroin in…
- HMS1 Homosexuality 1. An alleged gene for human male homosexuality. See: Gay gene
- Microsurgery Surgery through a microscope. Microsurgery is used to operate on very small structures, often requires…
- Electrodesiccation Use of an electric current to destroy cancerous tissue and control bleeding
- Head and neck cancer Head and neck cancer: The common carcinomas of the oral cavity, pharynx, and larynx as well as other tumors…
- Helminth A worm classified as a parasite. (A parasite is a disease-causing organism that lives on or in a human or…
- Hypertonia Increased tightness of muscle tone. Untreated hypertonia can lead to loss of function and deformity…
- Warburg apparatus A device used in biochemistry for measuring breathing (respiration) by tissues. Tissue slices are enclosed in…
- Geriatric medicine The branch of medicine concerned with the diagnosis, treatment and prevention of disease in older people and…
- Paresis 1 Incomplete paralysis. 2 A form of neurosyphilis (syphilis affecting the central nervous system -- the brain…