MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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).
Nitric oxide
>It acts as a vasodilator (blood vessel relaxant). >It therefore controls blood flow to tissues. >It regulates the binding and release of oxygen to hemoglobin. >It thereby controls the supply of oxygen to mitochondria (cell powerhouses…
Read the definitionRandom terms
Show more- Ovulation The release of the ripe egg from the ovary. The egg is released when the cavity surrounding it (the follicle)…
- Somatoform disorder See: Body dysmorphic disorder
- Bullous Characterized by blistering, such as in a second-degree burn. Bullous is the adjective for bulla. A bulla is…
- Otitis externa Otitis externa: Infection of the skin covering the outer ear canal that leads in to the ear drum, usually due…
- Antihistamines Drugs that combat the histamine released during an allergic reaction by blocking the action of the histamine…
- Intervening sequence Part of a gene that is initially transcribed from the DNA into the primary RNA transcript but then is excised…
- Fear of pleasure An abnormal, excessive, and persistent fear of pleasure. Sufferers with this most puritanical of phobias…
- XX male syndrome A syndrome characterized by the presence of an XX sex chromosome complement in an individual with male…
- Cavities Cavities: Holes in the two outer layers of a tooth called the enamel and the dentin. The enamel is the…
- Noisome Offensive to the senses and especially disgusting, offensive, or harmful to the sense of smell. For example…
- Nerve palsy, laryngeal Paralysis of the recurrent laryngeal nerve, a branch of the vagus nerve (a long and important nerve that…
- Platelet count The calculated number of platelets in a volume of blood, usually expressed as platelets per cubic millimeter…