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).
Syndrome, sick sinus
Symptoms of dizziness, confusion, fainting, and heart failure due to a problem with the sinus node of the heart, which acts as the body's natural pacemaker. If the sinus node is not functioning normally, it is reflected in an abnormally…
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Show more- Retinal artery, central The blood vessel that carries blood into the eye and supplies nutrition to the retina. The counterpart to the…
- Basilar fracture A break in bone at the base of the skull. About a half of basilar fractures are caused by bicycle or motor…
- Alactasia Lack of the enzyme lactase which is needed to digest the milk sugar lactose. See: Lactase deficiency
- Rhinitis, allergic The medical term for hayfever. (Hay fever is a misnomer since hay is not a usual cause of this problem and…
- Pellagra >Diarrhea; >Dermatitis: A scaly rash on skin exposed to light or trauma; >Dementia: Mental disorientation…
- Bioterrorism Bioterrorism: Terrorism using biologic agents. Biological diseases and the agents that might be used for…
- Cancer, penis S: Cancer of the penis is a disease in which malignant cells originate in the tissues of the penis. Cancer of…
- Spiral fracture A fracture, sometimes called a torsion fracture, in which a bone has been twisted apart. NTER>
- Needle biopsy, stereotactic See: Stereotactic needle biopsy
- Fish oil, omega-3 A class of fatty acids found in fish oils, especially from salmon and other cold-water fish, that acts to…
- Migraine, ophthalmic Migraine involving the eyes but without headache. Migraine, due to a spasm of blood vessels in the brain…
- Tetrapeptide A peptide consisting of four amino acids