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).
SiRNA
Abbreviation for small inhibitory RNA, a short sequence of RNA which can be used to silence gene expression
Read the definitionRandom terms
Show more- Metacarpals Five cylindrical bones extending from the wrist to the fingers.
- Hearing instrument A synonym for a hearing aid that gained popularity to distinguish the device from AIDS. See: Hearing aid
- Memory, implicit See: Implicit memory
- Passive-aggressive personality disorder A personality disorder characterized by passive-aggressive behavior. Passive-aggressive personality disorder…
- Parkinson disease Parkinson disease: A slowly progressive neurologic disease characterized by a fixed inexpressive face, a…
- Hereditary nonpolyposis colorectal cancer See: Hereditary nonpolyposis colon cancer
- Bar graph A visual display using bars to represent the relative size of different categories of a variable, with each…
- Radio frequency identification (RFID) A system for remotely storing and retrieving data. An RFID tag may be a little sticker that can be…
- Gastric MALT lymphoma A low-grade malignant lymphoma of the stomach associated with chronic infection by the bacterium H. pylori…
- Evolutionarily conserved gene A gene that has remained essentially unchanged throughout evolution. Conservation of a gene indicates that it…
- Cataract with poikiloderma atrophicans Also known as the Rothmund-Thomson syndrome, this is an hereditary disease characterized by progressive…
- Membranous vitreous type Stickler syndrome Yndrome, type I. See: Stickler syndrome