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).
Proxy, health care
A health care proxy is one form of advance medical directive. Advance medical directives pertain to treatment preferences and the designation of a surrogate decision-maker in the event that a person should become unable to make medical…
Read the definitionRandom terms
Show more- Rate, sedimentation A blood test that detects and monitors inflammation in the body. It measures the rate at which red blood…
- Non-inferior clinical trial A clinical trial that shows that a new treatment is equivalent to standard treatment. Also called a…
- Gerstmann-Straussler-Scheinker syndrome See: Gerstmann-Straussler-Scheinker syndrome
- Yeast artificial chromosome (YAC) A vector (carrier) created and used in the laboratory to clone pieces of DNA. A YAC is constructed from the…
- Cholecalciferol Vitamin D3
- Amino acid, nonessential An amino acid that can be made by humans and so is not essential to the human diet. There are 11 nonessential…
- Choriocarcinoma A highly malignant tumor that arises from trophoblastic cells within the uterus. Choriocarcinoma tends to be…
- Tachypnea (Pronounced tack-ip-nea.) Abnormally fast breathing. A respiratory rate that is too rapid. The normal rate of…
- Somnolent Sleepy or tending to cause sleep. 'Somnolent' came from French. It descends from the Latin 'somnus' meaning…
- Respiratory failure Inability of the lungs to perform their basic task of gas exchange, the transfer of oxygen from inhaled air…
- Transudate A fluid that passes through a membrane which filters out much of the protein and cellular elements to yield a…
- Polypectomy Removal of a polyp by surgery. In the case of polyps in the colon, polypectomy may be done by open abdominal…