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).
Virus
A microorganism smaller than a bacteria, which cannot grow or reproduce apart from a living cell. A virus invades living cells and uses their chemical machinery to keep itself alive and to replicate itself. It may reproduce with fidelity…
Read the definitionRandom terms
Show more- Menstrual cramps Menstrual cramps: Cramping in the lower abdomen, usually in the first or second day of the menstrual cycle…
- International normalized ratio An international unit (IU) is an internationally accepted amount of a substance. This type of measure is used…
- Diastolic Referring to the time when the heart is in a period of relaxation and dilatation (expansion). The noun for…
- Progesterone receptor test A laboratory test to determine if breast cancer cells have progesterone receptors on their surface. If the…
- Basal temperature 1) Usually, a person's temperature on awakening in the morning. As changes in basal temperature accompany…
- Inflammation A basic way in which the body reacts to infection, irritation or other injury, the key feature being redness…
- Colon polyp family history See: Colon cancer family history
- Interventional Pertaining to the act of intervening, interfering or interceding with the intent of modifying the outcome…
- Sea poisoning An intensely itchy rash due to contact with the tiny thimble jellyfish (Linuche unguiculata). These jellyfish…
- Campylobacter jejuni A bacterium that typically infects the bowels. Now the leading cause of bacterial food poisoning…
- Meatus An opening or passageway. For example, the female urethral meatus. The urethra is the transport tube from the…
- Hemidiaphragm, raised See: Elevated hemidiaphragm