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 arrhythmia
The normal increase in heart rate that occurs during inspiration (when you breathe in). This is a natural response and is more accentuated in children than adults. The 'sinus' refers to the natural pacemaker of the heart which is called…
Read the definitionRandom terms
Show more- Emboli Something that travels through the bloodstream, lodges in a blood vessel and blocks it. Examples of emboli…
- Live animal market See: Wet market
- Joint aspiration A common benign childhood condition involving hypermobile joints (that can move beyond the normal range of…
- American trypanosomiasis See: Chagas disease
- Uterine retroversion A slight to dramatic placement of the uterus that orients it toward the back. A tipped uterus is common and…
- General Clinical Research Center (Abbreviated GCRC). See: Clinical Research Center
- Leukomalacia, cystic periventricular Softening of the white matter near the ventricles of the brain resulting in abnormal cysts. Cystic…
- Gottron sign A scaly, patchy redness over the knuckles seen in patients with dermatomyositis, an inflammatory muscle…
- Gap junction An organized collections of protein channels in cell membranes that allows ions and small molecules to pass…
- Ectomy A surgical suffix referring to the removal of something. For example, a lumpectomy is the surgical excision…
- Nausea Nausea, is the urge to vomit. It can be brought by many causes including, systemic illnesses, such as…
- Drop attack See: Atonic seizure