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).
Gamma ray
High-energy electromagnetic radiation emitted by certain radionuclides when their nuclei transition from a higher to a lower energy state. Gamma rays have high energy and a short wave length. All gamma rays emitted from a given isotope…
Read the definitionRandom terms
Show more- TLSO Thoracolumbosacral orthosis. This is one of two main types of braces used to correct the lateral (sideways)…
- Personality disorder, borderline A serious mental illness characterized by pervasive instability in moods, interpersonal relationships…
- Poisoning Taking a substance that is injurious to health or can cause death. Poisoning is still a major hazard to…
- GSTO1 Glutathione S-transferase omega-1
- Syndrome, Ramsay Hunt See: Ramsay Hunt syndrome
- Ear canal, self-cleaning Most of the time the ear canals are self-cleaning, that is, there is a slow and orderly migration of ear…
- Schizoaffective disorder Schizoaffective disorder: A mood disorder that is coupled with some symptoms resembling those of…
- Castleman disease A disorder of lymphoid tissue (lymphadenopathy) with massive overgrowth (hyperplasia) of lymph nodes…
- Chemo Slang for chemotherapy -- drug therapy for cancer. Most anticancer drugs are given IV (into a vein) or IM…
- Single transverse palmar crease Preferable term for what historically was called a simian crease. See: Simian crease
- SERM Selective Estrogen-Receptor Modulator
- Vaccination Injection of a killed microbe in order to stimulate the immune system against the microbe, thereby preventing…