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).
Heteroplasia
The replacement of normal tissue of the body by abnormal tissue or by malpositioned normal tissue, a tissue growing in the wrong place. Progressive osseous heteroplasia is a disorder in which bone develops in areas where bone is normally…
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Show more- Hysterectomy, subtotal The uterus is surgically removed but the cervix is left is left in place. Also called a partial hysterectomy
- Syndrome, sick sinus Symptoms of dizziness, confusion, fainting, and heart failure due to a problem with the sinus node of the…
- Breastfeeding Breastfeeding: Feeding a child human breast milk. According to the American Academy of Pediatrics, human…
- Seizure, tonic-clonic See: Tonic-clonic seizure
- Syndrome, Meniere A condition with recurrent vertigo accompanied by ringing in the ears (tinnitus) and deafness. Symptoms…
- Paralysis Loss of voluntary movement (motor function). Paralysis that affects only one muscle or limb is partial…
- Fever blister A small sore situated on the face or in the mouth that causes pain, burning, or itching before bursting and…
- Bad air Any air considered noxious. Today, air filled with tobacco smoke might be considered 'bad air.' So might air…
- Cranial nerves Nerves that emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge from…
- Protein, C-reactive See: Proteolipid protein.
- Cardiac index A cardiodynamic measure based on the cardiac output, which is the amount of blood the left ventricle ejects…
- Ventricular arrhythmias Abnormal rapid heart rhythms (arrhythmias) that originate in the lower chambers of the heart (the…