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.
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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).
Human chromosome count
The usual number of chromosomes in humans, 46 chromosomes. Also called the human chromosome complement. History: For half a century, the human chromosome count was widely believed to be 48. That changed on Dec. 22, 1955. On that day at the…
Read the definitionRandom terms
Show more- Domain In molecular biology, a discrete portion of a protein with its own function. The combination of domains in a…
- Modifiers, biological response (BRMs) Substances that stimulate the body's response to infection and disease. The body naturally produces small…
- Peripheral vascular disease Peripheral vascular disease: A disease of blood vessels outside the heart. Peripheral vascular disease (PVD)…
- Ehlers-Danlos syndrome, dermatosparaxis type Lers-Danlos syndrome, dermatosparaxis type: A genetic disorder characterized by extremely fragile and sagging…
- Vein, varicose See: Varicose vein
- HTLV-III The human T-lymphotropic virus type III. An obsolete term for the human immunodeficiency virus or HIV
- Vein, pulmonary One of four vessels that carry aerated blood from the lungs to the left atrium of the heart. (The four are…
- Ectomy A surgical suffix referring to the removal of something. For example, a lumpectomy is the surgical excision…
- Keratitis-ichthyosis-deafness syndrome >Keratitis -- gradual destruction of the cornea of the eye, sometimes leading to blindness >Ichthyosis --…
- Niacin Niacin: Nicotinic acid, one of the B-complex B vitamins. Deficiency of niacin in the diet results in the…
- American Psychiatric Association A medical specialty society with over 35,000 US and international member physicians who 'work together to…
- Disease, phytanic acid storage See Refsum disease