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).
Keratin
Protein in the upper layer of the skin, hair, nails and animal horns. The word keratin comes from the Indo-European ker meaning horn.
Read the definitionRandom terms
Show more- Science (journal) A weekly journal concerning science. Science was founded in 1880 by one of the world's most famous…
- Burkholderia cepacia (B. cepacia, for short.) A group of bacteria found in soil and water that are often resistant to common…
- Cowpox A mild skin disease of milk cows, principally confined to the udder and teats, that may be contracted by…
- Catechol-O-methyltransferase COMT. An enzyme that catalyzes the degradation of catecholamines, including the neurotransmitters dopamine…
- Mortality, infant The death of an infant before his or her first birthday. The infant mortality rate is, by definition, the…
- Encephalitis, eastern equine See: Eastern equine encephalitis
- Prostaglandin F2-alpha One of the prostaglandins, a group of hormone-like substances that participate in a wide range of body…
- Physics, health The science of human health and radiation exposure. Health physics, also called medical physics, is devoted…
- Selenium An essential trace mineral that functions largely in the form of proteins, called selenoproteins, which act…
- LLL Acronym for the left lower lobe (of the lung). The left lung has but two lobes. The other lobe is the left…
- Beta error The statistical error (said to be 'of the second kind' or type II) made in testing when it is concluded that…
- Chemical menopause Menopause: Menopause induced by chemotherapy or other chemicals or medications. Chemical menopause is a type…