MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Aberration
(1) A deviation or irregularity. For example, a chromosome aberration is a deviation from the normal chromosome number or the normal chromosome structure. In this sense, aberration is also synonymous with deflection, departure, divergence…
Read the definitionRandom terms
Show more- Reflex A reaction that is involuntary. The corneal reflex is the blink that occurs with irritation of the eye. The…
- Diverticula The plural of diverticulum. As a person ages, pressure within the large intestine (colon) causes pockets of…
- Colonoscopy Colonoscopy: A procedure in which a long flexible viewing tube (a colonoscope) is threaded up through the…
- Biosafety level A specific combination of work practices, safety equipment, and facilities which are designed to minimize the…
- Cataract, primary A cataract that develops independently of other diseases. A primary cataract is in contrast to a secondary…
- Eleventh cranial nerve The eleventh cranial nerve is the accessory nerve. The twelve cranial nerves, the accessory nerve included…
- Ubiquinone See: Coenzyme Q10
- Peliosis hepatis A rare condition in which the liver contains multiple, randomly-distributed blood-filled spaces or cavities…
- ALMS1 A gene on chromosome 2p13. Alstrom syndrome is caused by mutation of ALMS1
- Binocular vision The ability to maintain visual focus on an object with both eyes, creating a single visual image. Lack of…
- Video-assisted resection Surgery that is aided by the use of a video camera that projects and enlarges the image on a television…
- Syndactyly, bony A condition in which the bones of fingers or toes are joined together. Bony syndactyly is the opposite of…