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).
Thyroglossal cyst
A fluid-filled sac present at birth in the midline of the neck. A thyroglossal cyst is a congenital malformation (a birth defect). It results from incomplete closure of a segment of the thyroglossal duct, a tube-like structure that…
Read the definitionRandom terms
Show more- Heterotaxy The abnormal placement of organs due to failure to establish the normal left-right patterning during…
- Frenulum A small structure that has a restraining function. For example, the lingual frenulum attaches the tongue to…
- Manic-depressive disease See manic-depression
- Parathyroid adenoma A small tumor of the parathyroid gland and the most common disorder of the gland. Parathyroid adenomas are…
- Department of Energy (DOE). One of the U.S. government agencies contributing to the Human Genome Project
- Thoracic duct A vascular structure which recirculates lymph into the blood stream. It begins in the abdomen and tracks…
- Subclinical disease An illness that stays below the surface of clinical detection. A subclinical disease has no recognizable…
- Ibuprofen Ibuprofen: A non-steroidal anti-inflammatory drug (NSAID) commonly used to treat pain, swelling, and fever…
- Y (in chemistry) The symbol for the element yttrium, an ultrarare metal named after Ytterby in southern Sweden. Yttrium has…
- ERT (estrogen replacement therapy) Estrogen replacement therapy (ERT) is used to treat menopause. It reduces or stops the short-term changes of…
- Cardiovascular system The circulatory system which comprises the heart and blood vessels. The system carries nutrients and oxygen…
- Medication, antibiotic A drug used to treat bacterial infections. The original definition of an antibiotic was a substance produced…