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).
PTCA
A winglike triangular membrane. Although a pterygium can be anywhere, including behind the knee, it commonly refers to a winglet of the conjunctiva. This pterygium may extend across the white of the eye toward the inner corner of the eye…
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Show more- Ethylene glycol poisoning Poisoning from ethylene glycol (a clear, colorless, odorless liquid with a sweet taste) that can produce…
- Disease, cardiovascular Disease affecting the heart or blood vessels. Cardiovascular diseases include arteriosclerosis, coronary…
- Eczema, contact A localized reaction that includes redness, itching, and burning where the skin has come into contact with an…
- Meiosis The process of germ cell formation. During meiosis, each chromosome pairs with the other chromosome in the…
- Jejunostomy A surgical operation to create an opening of the jejunum (a part of the (a part of the small intestine) to a…
- Fetal rubella effects The constellation of abnormalities, also called the rubella syndrome, caused by infection with the rubella…
- Fever, Rocky Mountain spotted (RMSF) Fever, Rocky Mountain spotted (RMSF): An acute febrile (feverish) disease initially recognized in the Rocky…
- Ureter A tube that carries urine down from the kidney to the bladder. There are normally two kidneys so there are…
- Photic sneeze reflex A disorder, also known as the achoo syndrome, characterized by nearly uncontrollable paroxysms of sneezing…
- CK The military designation for cyanogen chloride. See: Cyanide
- Tooth erosion Tooth erosion is a gradual loss of the normally hard surface of the tooth due to chemical, not bacterial…
- Inactivation, X chromosome A syndrome of inappropriate secretion of antidiuretic hormone (ADH) which results in the inability to put out…