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).
Heteroplasia
The replacement of normal tissue of the body by abnormal tissue or by malpositioned normal tissue, a tissue growing in the wrong place. Progressive osseous heteroplasia is a disorder in which bone develops in areas where bone is normally…
Read the definitionRandom terms
Show more- Leishmania A group of parasites causing a disease called leishmaniasis. For a fuller definition and more information…
- Rod A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provides side vision…
- State cancer registry >Monitor cancer trends over time. >Determine cancer patterns in various populations. >Guide planning and…
- Macroglossia Enlarged tongue. Macroglossia is sometimes said to be associated with Down syndrome, but in that disorder the…
- Category 2 storm See: Category two hurricane
- Signal transduction pathway The course by which a signal from outside a cell is converted to a functional change within the cell
- Cloning, DNA The use of DNA manipulation procedures to produce multiple copies of a single gene or segment of DNA
- Erosion An erosion is an eating away of a surface. ('Erodere' in Latin means to eat out.) For example, a skin erosion…
- Inheritance, mitochondrial The type of hereditary pattern seen when there is more than one genetic factor involved and, sometimes, when…
- Nephroblastomatosis The presence of multiple embryonic rests of tissue within the kidney. These nephrogenic rests usually are…
- Sympathetic nervous system A part of the nervous system that serves to accelerate the heart rate, constrict blood vessels, and raise…
- Naming diseases See: Disease nomenclature