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.
- 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).
Ptosis
Downward displacement. Ptosis of the eyelids is drooping of the eyelids.
Read the definitionRandom terms
Show more- VAQTA See: Varus.
- Janus kinase 3 See: JAK3
- Elbow, arthritis of the Inflammation (arthritis) of the elbow joint can be due to many systemic forms of arthritis, including…
- Central retinal artery The blood vessel that carries blood into the eye and supplies nutrition to the retina. The counterpart to the…
- KSS Kearns-Sayre syndrome
- Tumor marker Tumor markers are substances that can be detected in higher-than-normal amounts in the blood, urine, or body…
- Gleason score A grading system for prostate carcinoma devised by Dr. Donald Gleason in 1977 as a method for predicting the…
- Myeloencephalitis Inflammation of both the spinal cord and the brain. Myeloencephalitis (also called encephalomyelitis) can be…
- Cord, vocal See: Vocal cord
- Plague, bubonic The most common form of the plague named for the characteristic buboes which are enlarged lymph nodes…
- Thrombin A key clot promoter, thrombin is an enzyme that presides over the conversion of a substance called fibrinogen…
- Sinus arrhythmia The normal increase in heart rate that occurs during inspiration (when you breathe in). This is a natural…