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).
Opiate
A medication or illegal drug that is either derived from the opium poppy, or that mimics the effect of an opiate (a synthetic opiate). Opiate drugs are narcotic sedatives that depress activity of the central nervous system, reduce pain…
Read the definitionRandom terms
Show more- Heart test, EPS ElectroPhysiologic Study of the heart, a test of the electrical conduction system of the heart (the system…
- Ulcerative colitis Ulcerative colitis: A relatively common disease that causes inflammation of the large intestine (the colon)…
- Leukemia, acute lymphocytic Abbreviated AML. Also called acute myeloid leukemia or acute nonlymphocytic leukemia (ANLL). A quickly…
- Ovarian cyst A fluid-filled sac in the ovary. The most common type of ovarian cyst is called a follicular cyst. It results…
- Anticipation A remarkable phenomenon in which a genetic disease appears earlier appearance and with increased from with…
- Basophilic leukocyte See: Basophil
- Minipill A form of oral contraceptive taken daily, like combined oral contraceptives (the 'pill'), but containing only…
- Social phobia Excessive fear of embarrassment in social situations that is extremely intrusive and can have debilitating…
- Cruciate ligament, posterior The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint…
- PCP Pneumocystis carinii pneumonia. A parasitic infection of the lungs that is particularly common and…
- Flavin-containing monooxygenase-3 (FMO3) See Fish-odor syndrome
- Xanthelasma Tiny (1-2 mm) yellowish plaques that are slightly raised on the skin surface of the upper or lower eyelids…