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).
Endoderm
One of the three primary germ cell layers -- the other two are the mesoderm and ectoderm -- in the very early embryo. The endoderm is the innermost of the three layers. It differentiates to give rise first to the embryonic gut and then to…
Read the definitionRandom terms
Show more- Respiratory disease, acute A sudden condition in which breathing is difficult and the oxygen levels in the blood abruptly drop lower…
- Esophageal ulcer A hole in the lining of the esophagus corroded by the acidic digestive juices secreted by the stomach cells…
- Jellyfish itch An intensely itchy rash due to contact with the tiny thimble jellyfish (Linuche unguiculata). These jellyfish…
- Syncope, vasovagal See: Vasovagal syncope
- Enzyme, Warburg's yellow A key respiratory enzyme discovered by the German biochemist Otto Heinrich Warburg (1883-1970), a pioneer in…
- Xanthoma, eruptive See: Eruptive xanthoma
- Silk Road disease Behcet's disease. Called Silk Road disease because it is most common and more severe in people originating…
- Abraham-man Also abram-man. One of a class of beggars who once wandered over England after the dissolution of the…
- Implant, brainstem See: Brainstem implant
- Vitamin B -- nicotinic acid Deficiency of nicotinic acid (also known as niacin), one of the B-complex vitamins, causes pellagra. Pellagra…
- Electrolysis Electrolysis: Permanent removal of body hair, including the hair root, with an electronic device. While it is…
- PPAR Abbreviation for peroxisome proliferator-activated receptor. There are 3 known subtypes of PPARs --…