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).
Gain-of-function mutation
A mutation that confers new or enhanced activity on a protein. Loss-of-function mutations, which are more common, result in reduced or abolished protein function
Read the definitionRandom terms
Show more- Marfan syndrome Marfan syndrome: An inherited disorder of connective tissue characterized by abnormalities of the eyes…
- Sociopath A term once used for someone with what is now called antisocial personality disorder
- Encephalomyelitis Inflammation of both the brain and the spinal cord. Encephalomyelitis can be caused by a variety of…
- Spider veins A group of widened veins that can be seen through the surface of the skin. Their wheel-and- spoke shape…
- ABR (auditory brainstem response) Abbreviation for auditory brainstem response. See: ABR test
- Heterozygote A person possessing two different forms of a particular gene, one inherited from each parent. A heterozygote…
- Septicemia Systemic (bodywide) illness with toxicity due to invasion of the bloodstream by virulent bacteria coming from…
- Chorioangioma, placental A benign vascular (blood vessel) tumor of the placenta (afterbirth). Large chorioangiomas cause complications…
- Impact To lodge firmly or wedge in
- Amnesia, retrograde See: Retrograde amnesia
- Flying, fear of An irrational fear of flying is called aerophobia. Aerophobia also refers to irrational fear of fresh air or…
- Palsy, laryngeal Paralysis of the recurrent laryngeal nerve, a branch of the vagus nerve (a long and important nerve that…