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).
Sleepiness, excessive daytime (EDS)
A neurological disorder marked by a sudden recurrent uncontrollable compulsion to sleep. Also known as narcolepsy. It is often associated with cataplexy (a sudden loss of muscle tone and paralysis of voluntary muscles associated with a…
Read the definitionRandom terms
Show more- Deficiency, fatty aldehyde dehydrogenase Also known as the Sjogren-Larsson syndrome, this is a genetic (inherited) disease usually characterized by a…
- Breast augmentation Breast augmentation: Enlargement of the breasts. Augmentation of the breast typically consists of insertion…
- Trans- (prefix) From the Latin meaning 'across, over, or beyond.' Medical terms containing 'trans- ' as a prefix include…
- IHS Interleukin-1.
- Chinese restaurant syndrome A syndrome first described in 1968 in people who had eaten Chinese food on which MSG (monosodium glutamate)…
- Withdrawal symptoms Abnormal physical or psychological features that follow the abrupt discontinuation of a drug that has the…
- LCHAD deficiency Acute fatty liver of pregnancy (AFLP) has been found to be associated in some cases with an abnormality of…
- Tamoxifen (Nolvadex) An antiestrogen (a drug that blocks the effects of estrogen) which competes with estrogen for binding sites…
- Five-lipoxygenase-activating protein See: FLAP
- Liver of pregnancy, acute fatty Liver failure in late pregnancy, usually from unknown cause. Acute fatty liver of pregnancy (AFLP) typically…
- Motor In medicine, having to do with the movement of a part of the body. Something that produces motion or refers…
- Angina, variant Angina, variant: Chest pain due to coronary artery spasm, a sudden constriction of a coronary artery (one of…