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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Beta-agonist
A bronchodilator medicine that opens the airways by relaxing the muscles around the airways that may tighten during an asthma attack or in COPD (chronic obstructive pulmonary disease). Beta-agonists can be administered by inhalers or…
Read the definitionRandom terms
Show more- Diabetes insipidus Diabetes insipidus: Excessive urination and extreme thirst as a result of inadequate output of the pituitary…
- Universal donor A person who is type O in the ABO blood group system and can donate blood to all recipients
- Dysplasia Abnormal in form. From the Greek dys- (bad, disordered, abnormal) and plassein (to form). For example…
- Neoplasia The process of abnormal and uncontrolled growth of cells. The product of neoplasia is a neoplasm (a tumor)
- Genu The Latin word for the knee. When the knee is referred to in medicine, it is just called the knee. However…
- Deficiency, phenylalanine hydroxylase See Phenylalanine hydroxylase deficiency
- Cone dystrophy A disease of the cones, the specialized light-sensitive cells that act as photoreceptors in the retina of the…
- NEP 1. Neutral endopeptidase. See: Metallomembrane endopeptidase.2. Neuroepithelial
- Systemic Affecting the entire body. A systemic disease such as diabetes can affect the whole body. Systemic…
- Dental drill A device that dentists use to drill into teeth. Primitive dental drills were used in the 18th and early 19th…
- Curable Amenable to a cure, capable of being cured, to being healed and made well. Most skin cancers, fortunately…
- Small calorie (Calorie) A type of lung cancer in which the cells appear small and round under the microscope. Also called oat cell…