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).
ADH (antidiuretic hormone)
A peptide molecule that is released by the pituitary gland at the base of the brain after being made nearby (in the hypothalamus). ADH has an antidiuretic action that prevents the production of dilute urine (and so is antidiuretic). A…
Read the definitionRandom terms
Show more- Shunt, transjugular, intrahepatic, portosystemic A shunt that drains fluid from the cerebral ventricle into the abdomen.
- Axillary Pertaining to the cavity beneath the junction of the arm and the body, better known as the armpit. The word…
- Cardioversion The conversion of one cardiac rhythm or electrical pattern to another, almost always from an abnormal to a…
- Hormone, thyroxine A chemical substance made by the thyroid gland The thyroid gland uses iodine to make thyroid hormones…
- Elidel Brand name of pimecrolimus
- Postmature infant A baby born 2 weeks (14 days) or more after the usual 9 months (280 days) of gestation. The gestation (length…
- Midwife assistant A person who assists a midwife with prenatal care, childbirth education, delivery, and post-natal care. Also…
- STOP (selective tubal occlusion procedure) A nonsurgical form of permanent birth control in which a physician inserts a 4-centimeter (1.6 inch) long…
- Achromatopsia An hereditary disorder of sight due to a lack of cone vision - that type of vision provided by the cone…
- Petechiae Pinpoint flat round red spots under the skin surface caused by intradermal hemorrhage (bleeding into the…
- Somnambulist Sleep talking. Talking in one's sleep is considered a normal phenomenon that is of no medical or…
- Itis Suffix meaning inflammation. For example, colitis is literally colon inflammation or figuratively…