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).
Methylmalonicaciduria
An inherited metabolic (biochemical) disease that causes young children to become mentally retarded. The defect in some (but not all) of these children has to do with an inability to use the vitamin B12 they ingest. If these children are…
Read the definitionRandom terms
Show more- Amputation Removal of part or all of a body part enclosed by skin. For example, removal of part of a finger or an entire…
- Spasm, nictitating Spasm of the eyelid with continuous winking. To nictitiate is to wink. 'Nictitate' and the older verb…
- Nosebleed Nosebleed: Its medical name is epistaxis.
- Tympanites A hollow drum-like sound produced when a gas-containing cavity is tapped sharply. Tympanites is heard if the…
- Idiopathic Of unknown cause. Any disease that is of uncertain or unknown origin may be termed idiopathic. For example…
- Basal thermometer Colloquially used as a synonym for basal temperature. Any thermometer can be used to take the basal…
- Apical The adjective for apex, the tip of a pyramidal or rounded structure, like the lung or the heart. For example…
- Cryosurgery Treatment performed with an instrument that freezes and destroys abnormal tissue. See also cryotherapy.
- Toxic agent syndrome See: Toxic syndrome
- Urinary infection in children See: Urinary tract infection in children
- MPO Myeloperoxidase
- Lung cancer, oat cell See: Oat cell cancer