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).
Gene expression
The translation of information encoded in a gene into protein or RNA. Expressed genes include genes that are transcribed into messenger RNA (mRNA) and then translated into protein, as well as genes that are transcribed into types of RNA…
Read the definitionRandom terms
Show more- Multifactorial inheritance The type of hereditary pattern seen when there is more than one genetic factor involved and, sometimes, when…
- Constitutional thrombopathy See: Von Willebrand disease
- Cardiac index A cardiodynamic measure based on the cardiac output, which is the amount of blood the left ventricle ejects…
- Disease, acute respiratory A sudden condition in which breathing is difficult and the oxygen levels in the blood abruptly drop lower…
- Sign Any objective evidence of disease. Gross blood in the stool is a sign of disease. It can be recognized by the…
- Hematuria, microscopic Blood in the urine that is visible only under a microscope. There is so little blood that it cannot be seen…
- Coagulation In medicine, the clotting of blood. The process by which the blood clots to form solid masses, or clots. More…
- DTP Diphtheria-Tetanus-Pertussis vaccine
- Hemolytic disease of the newborn Abnormal breakup of red blood cells in the fetus or newborn. This is usually due to antibodies made by the…
- Liquid nitrogen Nitrogen in a liquid state. Liquid nitrogen is supercool -- about 200 degrees Celsius (320 degrees…
- Caudal An anatomic term meaning 1. Pertaining to the tail or the hind part. 2. Situated in or directed toward the…
- Anxiety disorder A chronic condition characterized by an excessive and persistent sense of apprehension with physical symptoms…