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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Phenylalanine
An essential amino acid. (The human body cannot make it so it is essential to the diet.) Phenylalanine that is ingested is largely transformed (hydroxylated) to form the amino acid tyrosine, which is used in protein synthesis. Too little…
Read the definitionRandom terms
Show more- Syndrome, dumping A group of symptoms that occur when food or liquid enters the small intestine too rapidly. These symptoms…
- Cortical Having to do with the cortex, the outer portion of an organ. The outer portion of the adrenal gland is called…
- Saline Relating to salt. As an adjective, 'saline' means 'salty, containing salt.' As a noun 'saline' is a salt…
- Kikuchi disease A disorder that typically causes 'swollen glands' in the neck (cervical lymphadenopathy) together with fever…
- Atrophic vaginitis Thinning of the lining (the endothelium) of the vagina due to decreased production of estrogen. This may…
- Basal metabolic rate A measure of the rate of metabolism. For example, someone with an overly active thyroid will have an elevated…
- Occupational Safety and Health, Nat'l Institut for Better known as NIOSH, the National Institute for Occupational Safety and Health is a US Federal agency…
- Genome, chicken See: Chicken genome
- Pollices The thumbs. The plural of pollex. See: Pollex
- Human T-lymphotropic virus type III An obsolete term for the human immunodeficiency virus, now commonly called HIV
- Pyelogram X-ray study of the kidney especially showing the pelvis (urine-collecting basin) of the kidney and the ureter.
- D-IBS Diarrhea-predominant IBS (irritable bowel syndrome)