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).
Control (research)
In research, control subjects or control procedures permit comparison with experimental results. The first controlled clinical research was probably done in 1875 by the British naval surgeon James Lind who, on board the HMS Salisbury, gave…
Read the definitionRandom terms
Show more- Premacular fibrosis See: Macular pucker
- Osteosarcoma A cancer of the bone that occurs predominantly in adolescents and young adults. It accounts for 5 percent of…
- Optic glioma A benign tumor on an optic nerve or the optic chiasm (the crossing of the two optic nerves). Optic gliomas…
- Hyperthermia, malignant A series of potentially fatal problems that can occur during surgery, malignant hyperthermia is caused by a…
- Disease, coronary artery >Chest pain (angina pectoris) from inadequate blood flow to the heart; >Heart attack (acute myocardial…
- Acute-phase protein Any protein whose plasma concentration increases (or decreases) by 25% or more during certain inflammatory…
- Genome, plague See: Plague bacterium genome
- Pulse, trip-hammer See: Pulse, water hammer
- Pneumococcus (Streptococcus pneumoniae) A type of bacterium that comes in pairs and is shaped like a lancet (a surgical knife with a short wide…
- Dehisce To burst open or gape. A surgical wound may partially or completely dehisce after surgery, depending upon…
- Intervening sequence Part of a gene that is initially transcribed from the DNA into the primary RNA transcript but then is excised…
- Drug, sulfa One of the sulfonamides, the sulfa-related antibiotics which are used to treat bacterial and some fungal…