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).
Nonoxynol
Nonoxynol-9 is the most commonly encountered spermatocide in the United States. As with other spermatocides, it destroys spermatozoa; it kills sperm. The nonoxynols, technically speaking, are nonionic surfactant [surface active] mixtures…
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Show more- Carcinoid syndrome A tumor which secretes large amounts of the hormone serotonin. Carcinoid tumor is also called an…
- Endorphin One of the body's own painkillers, an opioid (morphine-like) chemical produced by the body that serves to…
- Barrett's esophagus Ng=0 width='100%' border=0> ODYvAlign=top bgColor=#cccccc colSpan=2> vAlign=top width='100%'…
- Conjoined twin Identical (monozygotic) twins that did not separate fully from one another but are still partially united…
- Heart block A block in the conduction of the normal electrical impulses in the heart.
- MRI Abbreviation and nickname for magnetic resonance imaging. For more information, see: Magnetic Resonance…
- Tetranucleotide A sequence of 4 base pairs. (Bases are the building blocks of DNA.) Expansion of a tetranucleotide repeat…
- Cerebral calcification, nonarteriosclerotic This syndrome described in 1930 by T. Fahr is a genetic (inherited) neurological disorder characterized by…
- Stenotic Narrowed, as in a stenotic artery. From the Greek 'stenos' meaning narrow
- Proliferative Growing and increasing in number rapidly. For example, the lymphoproliferative disorders are diseases in…
- Leuk- Prefix meaning white, as in leukemia. Leuk-and leuko-, the form used before a consonant, come from the Greek…
- Chamomile An herb often used in the form of a tea as a sedative. Allergic reactions to chamomile can occur…