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).
Twenty-twenty
Perfectly normal vision. From the ability to score 20/20 on the test of visual acuity with the eye chart. This familiar chart, called Snellen's chart after its inventor, is usually read while standing a distance of 20 feet from it. Visual…
Read the definitionRandom terms
Show more- Denture An artificial set of teeth that can be removed
- Transdifferentiation An instrument that converts electrical energy into mechanical energy. A transducer can also act as a…
- Granular leukocyte >Neutrophils have 'neutral' subtle granules; >Eosinophils have prominent granules that stain readily with the…
- Cerebral fornix An arching fibrous band in the brain connecting the two lobes of the cerebrum. (The cerebrum is the largest…
- Asthma susceptibility gene One of the genes that predisposes a person to asthma. A new gene family that plays a major role in asthma…
- PTCA A winglike triangular membrane. Although a pterygium can be anywhere, including behind the knee, it commonly…
- Sporadic >An endemic is present in a community at all times but in low frequency. An endemic is continuous, as in the…
- Streptococcus faecalis Now called Enterococcus faecalis. See Enterococcus
- False vocal cord A fold of mucous membrane covering muscle in the larynx. The false vocal cord separates the ventricle of the…
- Varicosity 1. An enlarged and tortuous vein, artery, or lymphatic vessel. 2. Specifically, a varicose vein
- Retromingent Urinating backwards. Also an animal such as a raccoon that urinates backwards. As in: 'You have revealed…
- Parotitis Inflammation of the parotid glands. A classic feature of mumps.