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).
Particle, alpha
A tiny mass of material composed of two protons and two neutrons. Alpha particles do not travel very far from their radioactive source. They cannot pass through a piece of paper, clothes or even the layer of dead cells which normally…
Read the definitionRandom terms
Show more- Peri- Prefix meaning around or about. For example, pericardial is around the heart, and periaortic lymph nodes are…
- Myc- The plural of mycelium.
- Congenital bilateral absence of vas deferens A condition in males when the tubes that carry sperm from the testes (the vas deferens) fail to develop…
- Supportive care Treatment given to prevent, control, or relieve complications and side effects and to improve the patient's…
- Accelerated phase of leukemia Refers to chronic myelogenous leukemia (CML) that is progressing. The number of immature, abnormal white…
- Mastectomy, prophylactic Removal of one or both breasts without the current presence of cancer. This surgery is sometimes chosen as a…
- Bariatric surgery Surgery on the stomach and/or intestines to help a person with extreme obesity lose weight. Bariatric surgery…
- LN2 Liquid nitrogen
- Malaria, pregnancy-associated Someone who is versed in or engaged in the study of malaria. "Independent malariologists believe it kills two…
- Diabetic ketoacidosis High blood glucose with the presence of ketones in the urine and bloodstream, often caused by taking too…
- Re-uptake See: Reuptake
- Gland, thyroid See: Thyroid gland