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).
Annulus
A ringlike structure, or any body part that is shaped like a ring. Applied to many small ring-shaped structures. The base of a heart valve that supports the valve's leaflets is called the annulus. A ring-shaped pancreas that encircles the…
Read the definitionRandom terms
Show more- Radiation, background See: Background radiation
- Gamma knife A type of radiosurgery (radiation therapy) machine that acts by focusing low-dosage gamma radiation from many…
- Myositis Inflammation of muscle tissue. There are many causes of myositis, including injury, medications, and diseases
- Popliteal fossa The hollow behind the knee
- Joint, atlas and axis The joint between the atlas and axis bones. The atlas is the first cervical (neck) vertebra which is just…
- Smallpox vaccine A vaccine containing a live virus called vaccinia used to prevent smallpox. The vaccine does not contain the…
- Bacterial Of or pertaining to bacteria. For example, a bacterial lung infection
- Ectromelia virus A member of the poxvirus family which is a highly virulent natural pathogen of mice that causes mousepox, a…
- Water requirements, infant Water is an important part of a baby's diet because water makes up a large proportion of the baby's body…
- Mouse genome All of the genetic information contained in the laboratory mouse (Mus musculus). The genomes of particular…
- Reflex, quadriceps See: Knee jerk
- Benign Not cancer. Not malignant. A benign tumor does not invade surrounding tissue or spread to other parts of the…