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).
Mutation, null
A mutation (a change) in a gene that leads to its not being transcribed into RNA and/or translated into a functional protein product. For example, a null mutation in a gene that usually encodes a specific enzyme leads to the production of…
Read the definitionRandom terms
Show more- Hydrocephalus, congenital Hydrocephalus present at birth
- Warble A small hard nodule produced by the larva of a fly that has penetrated the skin. The warble can be…
- Osteoblast A cell that makes bone. It does so by producing a matrix that then becomes mineralized. Bone mass is…
- Post-nasal drip Mucous accumulation in the back of the nose and throat leading to or giving the sensation of mucus dripping…
- Nonlymphocytic leukemia, acute Leukemia, acute: Abbreviated ANLL. More commonly called acute myeloid leukemia (AML). A quickly progressive…
- Bursal Pertaining to a bursa
- Syndrome, Pallister-Killian Condition with multiple malformations at birth and mental retardation due to isochromosome 12p mosaicism (an…
- Nicotiana tabacum A South American herb whose leaves contain 2-8% nicotine and serve as the source of smoking and smokeless…
- Fungicidal Capable of killing fungi
- Acoustic nerve A cranial nerve concerned with hearing, balance and head position. The acoustic nerve is the 8th cranial…
- Rad Radiation absorbed dose, a measure for a dose of ionizing radiation
- Housemaid's knee See Prepatellar bursitis