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- Pachy- (prefix) Thick. As in pachydactyly (thick fingers), pachydermatous (thick fingers) and pachyonychia (thick nails)…
- Kleine-Levin syndrome A rare condition characterized by excessive need for sleep, food, and sexual disinhibition. Most people with…
- Chronic bacterial prostatitis Prostatitis: Longstanding bacterial infection of the prostate gland superimposed on a defect in the prostate…
- Deuteranomaly Colorblindness of the red-green type, also known as deuteranopia or Daltonism. The term 'Daltonism' is…
- Nadir The lowest point as, for example, the lowest blood count after chemotherapy, the lowest concentration of a…
- Cynophobia An abnormal and persistent fear of dogs. Sufferers from cynophobia experience anxiety even though they…
- Child injury, mental Also known as emotional child abuse, this is the third most frequently reported form of child abuse (after…
- Transport disease, cystine Commonly known as cystinuria, this is an inherited (genetic) disorder of the transport of an amino acid (a…
- Hyperthermia : Overheg of the body. This may be due to extreme weather conditions. Unrelieved hyperthermia can lead to…
- Enteric Pertaining to the small intestine. Also called (less often) enteral
- Pneumoconiosis, coal miner's See: Black lung disease
- McArdle's disease See: McArdle disease