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.
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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).
Aromatase inhibitor
A drug that inhibits the enzyme aromatase and by that means lowers the level of the estrogen estradiol. Aromatase inhibitors represent a class of antiestrogens. Aromatase catalyzes the conversion of testosterone (an androgen) to estradiol…
Read the definitionRandom terms
Show more- Syndrome, polyglandular autoimmune (PGA) A genetic autoimmune disease with an extraordinary array of clinical features but characterized most often by…
- Oculocutaneous albinism See: Albinism, oculocutaneous
- Menstrual irregularity The normal menstrual cycle is about four weeks long, and often follows the phases of the moon. Its length…
- Blister A collection of fluid underneath the top layer of skin (epidermis). One that is more than 5 mm in diameter…
- Coenzyme Q10 A compound needed for the proper functioning of an enzyme, a protein that speeds up the rate at which…
- Cranial nerve X The tenth cranial nerve, and one of the most important, is the vagus nerve. All twelve of the cranial nerves…
- Infant mortality rate The number of children dying under a year of age divided by the number of live births that year. The infant…
- Astigmatic Referring to astigmatism or a person with astigmatism, a common form of visual impairment in which part of an…
- Amblyopia, nocturnal Amblyopia refers to blindness so nocturnal amblyopia is, literally, night blindness. Listed in medical…
- Leukemia, chronic lymphocytic The most common form of leukemia in adults, in which the lymphocytes may look fairly normal but are not fully…
- Ultraviolet A One of the three types of invisible light rays (together with ultraviolet B and ultraviolet C) given off by…
- Syndromatic hepatic ductular hypoplasia Also called Alagille syndrome or arteriohepatic dysplasia, this is a genetic disorder characterized by…