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).
Conserved sequence
A base sequence in a DNA molecule (or an amino acid sequence in a protein) that has remained essentially unchanged, and so has been conserved, throughout evolution
Read the definitionRandom terms
Show more- Prophylaxis A measure taken for the prevention of a disease or condition. For example, dental prophylaxis consists of…
- EGD Epidermal growth factor. A polypeptide (small protein) that is a powerful mitogen. (It stimulates cells to…
- Analogous In anatomy, similar in appearance or function but otherwise different. Two structures may be analogous if…
- Sperm stem cell A cell that is incapable of fertilizing an egg cell but can give rise to cells that develop into sperm. Sperm…
- Hemangioma, cavernous A type of hemangioma composed of blood-filled 'lakes' and channels. It is typically raised and red or…
- Pronucleus A cell nucleus with a haploid set of chromosomes (23 chromosomes in humans) resulting from meiosis (germ-cell…
- Nevus 1. Any birthmark.2. A benign pigmented spot on the skin such as a mole (a cluster of melanocytes and…
- Tick, American dog See American dog tick
- Headache, hypnic See: Hypnic headache
- Weighing, underwater See: Underwater weighing
- Socialized medicine A system of health care in which all health personnel and health facilities, including doctors and hospitals…
- Angiotensin converting enzyme Usually abbreviated ACE