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).
Alpha helix
The coiled structure of many proteins consisting of a single chain of amino acids stabilized by hydrogen bonds. The alpha helix was first proposed by Linus Pauling and Robert Corey in a brilliant series of paper in the early 1950s. It is…
Read the definitionRandom terms
Show more- Central vision Straight-ahead vision. Central vision is the work of the macula, a small area in the center of the retina…
- Dental impaction Teeth pressing together. For example, molar teeth (the large teeth in the back of the jaw) can be impacted…
- Bisphosphonate A class of drugs used to strengthen bone. Bone is in a constant state of remodeling, whereby new bone is laid…
- Data Facts, statistics, and the like. In medicine and the health sciences, people often speak of 'the data'…
- NGFB The beta polypeptide chain of nerve growth factor
- Elavil See: Amitriptyline
- Referral The recommendation of a medical or paramedical professional. If you get a referral to ophthalmology, for…
- Streptococcus, group A A well-known strain (type) of streptococcus (strep) bacteria that can cause strep throat and common skin…
- Immunization, infectious hepatitis See Immunization, hepatitis A
- Cephalic disorder A congenital condition that stems from damage to, or abnormal development of, the budding nervous system…
- Insulin resistance Insulin resistance: The diminished ability of cells to respond to the action of insulin in transporting…
- Avery, MacLeod, and McCarty Authors of a scientific paper entitled 'Studies on the chemical nature of the substance inducing…