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).
Astraphobia
An abnormal and persistent fear of thunderstorms. Sufferers experience anxiety even when they realize the risk of harm is very small. Consequently, when indoors they might seek shelter under a bed, in a closet or in a basement. They…
Read the definitionRandom terms
Show more- Lethargy 1. Abnormal drowsiness, stupor. 2. A state of indifference.From the Greek lethargia, drowsiness
- Hypocapnia Less than the normal level of carbon dioxide in the blood. Hypoapnia is the opposite of hypercapnia. The…
- Kidney stone Kidney stone: A stone in the kidney (or lower down in the urinary tract). Kidney stones are a common cause of…
- Participant 1. In a clinical trial, someone who takes part in it. A participant may or may not have a disease. The term…
- Familial tremor See: Essential tremor
- Bacillary angiomatosis A bacterial infection due to a cat scratch most often seen today in people with HIV. The disease…
- Malrotated ear An ear that is slanted more than usual. Technically, an ear is slanted when the angle of the slope of the…
- Diethylstilbestrol The earliest synthetic (man-made) form of the hormone estrogen. Diethylstilbestrol (DES) was once widely…
- Assay An assay is an analysis done to determine: > >The presence of a substance and the amount of that substance…
- Hemoglobin F Normal fetal hemoglobin, the predominant type of hemoglobin in the fetus and newborn. The F stands for Fetal.
- IBS (irritable bowel syndrome) Irritable bowel syndrome): A common gastrointestinal disorder involving an abnormal condition of gut…
- Circadian Refers to events occurring within a 24-hour period, in the span of a full (24-hour) day, as in a circadian…