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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Quiescent
Marked by a state of inactivity, repose, or tranquillity. For example, a quiescent stem cell is a stem cell that is resting at the time but that might be stimulated later to divide and proliferate. Quiescent also means causing no trouble…
Read the definitionRandom terms
Show more- Primary biliary cirrhosis (PBC) A liver disease caused by an abnormality of the immune system. Small bile ducts within the liver become…
- Asthma, exercise-induced Asthma, exercise-induced: Asthma that is 'triggered' by vigorous physical activity. Exercise-induced asthma…
- Calculus, renal A stone in the kidney (or lower down in the urinary tract). Also called a kidney stone. The stones themselves…
- Total hip replacement Total hip replacement: Surgery in which the diseased ball and socket of the hip joint are completely removed…
- Prosthesis, nasal See: Nasal prosthesis
- Coronary artery disease >Chest pain (angina pectoris) from inadequate blood flow to the heart; >Heart attack (acute myocardial…
- Fatty acid One of many molecules that are long chains of lipid-carboxylic acid found in fats and oils and in cell…
- Fear of heat Thermophobia. An abnormally excessive and persistent fear of heat, including hot weather and hot objects…
- Failure, autonomic See: Autonomic failure
- Operation, Macewen A surgical operation for inguinal hernia designed by Sir William Macewen (1848-1924), a surgeon in Glascow…
- Hypertrophy Enlargement or overgrowth of an organ or part of the body due to the increased size of the constituent cells…
- Dyad The word 'dyad' comes from the Greek 'dyas' meaning the number two. In psychology, a dyad refers to a pair of…