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).
Comedo
The primary sign of acne consisting of a dilated (widened) hair follicle filled with keratin squamae (skin debris), bacteria, and sebum (oil). A comedo may be closed or open. A closed comedo has an obstructed opening to the skin and may…
Read the definitionRandom terms
Show more- Aneurysm, aortic See: Aortic aneurysm
- Screening, newborn hearing Testing of the newborn baby's ability to hear. Newborn screening of hearing is done with automated auditory…
- Stilling-Turk-Duane syndrome See: Duane syndrome
- Vitamin B -- niacin Deficiency of niacin, one of the B-complex vitamins, causes pellagra. See: Pellagra
- Xeroderma Abnormally dry skin. Xeroderma can be caused by a deficiency of vitamin A, systemic illness, overexposure to…
- Morbid jealousy See: Othello syndrome
- Captioning The text display of spoken words, presented on a movie screen or a television (or another type of monitor)…
- Duane syndrome See: Okihiro syndrome.
- Virus, attenuated To attenuate is to weaken or to make (or become) thin. The word derives from a combination of the Latin…
- Quantitative Having to do with quantity or with the amount. See also qualitative.
- Double helix The structure of DNA with the two strands of DNA spiraling about one other. The double helix looks something…
- Contraception, emergency See: Emergency contraception