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).
Sinus tachycardia
A fast heartbeat (tachycardia) because of rapid firing of the sinoatrial (sinus) node. The sinoatrial (or sinus) node is the natural pacemaker of the heart. It is located in the wall of the right atrium (the right upper chamber of the…
Read the definitionRandom terms
Show more- RA Rheumatoid arthritis
- Presenteeism The problem of workers being on the job but, because of medical conditions, not fully functioning. The health…
- Acute HIV infection The body's initial reaction to infection by the HIV virus. Acute HIV infection is a flu-like syndrome that…
- Disease, Pelizaeus-Merzbacher See: Polycystic ovarian syndrome.
- Measly tapeworm Taenia solium
- Mind That which thinks, reasons, perceives, wills, and feels. The mind now appears in no way separate from the…
- Dysfunction, erectile A consistent inability to sustain an erection sufficient for sexual intercourse. Also commonly known as…
- Ectoparasite A parasite that lives on or in the skin but not within the body. Fleas and lice are ectoparasites…
- Locoregional Limited to a local region. See also: Locoregional anesthesia; Locoregional metastasis
- Semen DNA analysis Surface EMG.
- Menstrual Pertaining to menstruation (the menses), as in last menstrual period, menstrual cramps, menstrual cycle, and…
- Hogwarts headache Headache: A generalized headache from spending many hours reading an unusually long volume such as one of…