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).
Placebo-controlled
A term used to describe a method of research in which an inactive substance (a placebo) is given to one group of participants, while the treatment (usually a drug or vaccine) being tested is given to another group. The results obtained in…
Read the definitionRandom terms
Show more- Gallus gallus genome The genome of the Red Jungle Fowl, the ancestor of domestic chickens. See: Chicken genome
- Cluster In epidemiology, an aggregation of cases of a disease or another health-related condition, such as a cancer…
- U.S. National Library of Medicine (NLM) The world's largest medical library, the U.S. National Library of Medicine (NLM) is part of the National…
- Myometrium The muscular outer layer of the uterus.
- Otosclerosis The abnormal formation of new bone in the middle ear that gradually immobilizes the stapes (stirrup bone) and…
- Constipation Constipation: Infrequent (and frequently incomplete) bowel movements. The opposite of diarrhea, constipation…
- Inversion, pericentric chromosome A basic type of chromosome rearrangement in which a segment that includes the centromere (and so is…
- Last menstrual period By convention, pregnancies are dated in weeks starting from the first day of a woman's last menstrual period…
- Thoracolumbosacral orthosis (TLSO) One of the two main types of braces used to correct the lateral (sideways) curve of the spine in scoliosis…
- Ear, inner There are three sections of the ear. They are the external ear, the middle ear, and the inner ear. The inner…
- Autonomic neuropathy Disease of the nerves affecting mostly the internal organs such as the bladder muscles, the cardiovascular…
- AHD Abbreviation for alveolar hydatid disease; American Hospital Directory; and atherosclerotic heart disease