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).
Pneumococcal immunization
Vaccination to help prevent infection by Streptococcus pneumoniae, also known as the pneumococcus bacterium. This bacterium causes one of the most common and severe forms of pneumonia. To prevent this form of pneumonia, a vaccine has been…
Read the definitionRandom terms
Show more- Meltdown, genetic A genomic crisis due to an extraordinarily high rate of mutation, a phenomenon known to occur in viruses and…
- Fibril The diminutive of fiber. A small fiber, a fine thread
- Healthy 1. Enjoying good health, as she is healthy. 2. Evidencing good health, as her skin is healthy. 3. Conducive…
- Transvaginal ultrasound A technique in which sound waves are sent out by an ultrasound probe that has been inserted in the vagina…
- Headache, cluster A distinctive syndrome of headaches, also known as migrainous neuralgia. There are two main clinical patterns…
- Date, expiration The date for a drug estimated for its shelf life with proper storage in sealed containers away from harmful…
- Trichomonas A single-celled protozoan parasite best known in medicine because one species causes vaginitis (vaginal…
- Protease An enzyme that can split a protein into peptides (from which the protein was originally created).
- Pisa syndrome A condition in which there is sustained involuntary flexion of the body and head to one side and slight…
- Papilloma, intraductal A benign, wart-like growth that occurs in breast ducts
- Serration A finely notching like that along the cutting edge of a saw. The serratus muscles take their name from their…
- Fetoscopy A technique for looking directly at the fetus within the uterus (using a fetoscope).