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).
Stricture, esophagus, acute
A narrowing or closure of the normal opening of the swallowing tube leading to the stomach, usually caused by scarring from acid irritation. Acute, complete obstruction of the esophagus occurs when food (usually meat) is lodged in the…
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Show more- G protein These molecules have been described as 'biological traffic lights.' Located inside the cell, G proteins are…
- Orifice An opening. The mouth for example is an orifice.
- Fear of flying An irrational fear of flying is called aerophobia. Aerophobia also refers to irrational fear of fresh air or…
- Salmonellosis Infection with bacteria belonging to the genus Salmonella. Salmonellosis is a common cause of food poisoning…
- Perioperative Literally, around (the time of) surgery. More specifically, the period of time extending from when the…
- Primary tumor A tumor that is at the original site where it first arose. For example, a primary brain tumor is one that…
- Mm Abbreviation for millimeters. For example, mm Hg means millimeters of mercury, the height of a column of…
- Macrophage A type of white blood that ingests (takes in) foreign material. Macrophages are key players in the immune…
- Beckwith-Wiedemann syndrome An overgrowth syndrome, whose clinical manifestations typically include macrosomia (large body size)…
- Primary teeth The first teeth which are shed and replaced by permanent teeth. The first primary tooth comes in at about 6…
- Lipids Another word for 'fats.' (Please see the various meanings of Fat.) Lipids can be more formally defined as…
- Hemophobia An abnormal and persistent fear of blood. Sufferers of this very common phobia dread the sight of their own…