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…
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Show more- Sunscreen A substance that blocks the effect of the sun's harmful rays. Using lotions that contain sunscreens can…
- Pregnancy, tubal An ectopic pregnancy that takes place in the Fallopian tube. Tubal pregnancies are due to the inability of…
- Ceps A combining form referring to the head. Derived from the Latin caput, meaning head. See also: Janiceps
- Suction-assisted lipectomy Another name for liposuction, the surgical removal of fat deposits from specific parts of the body, the most…
- RNA virus A virus in which the genetic material is RNA. The RNA may be either double- or single-stranded. There are 6…
- Fibroadenoma A benign growth in the breast that is solid, firm, smooth and usually painless or only slightly tender…
- Amelioration Not a word confined to medicine but a word used in medicine, amelioration is synonymous with improvement. If…
- Anteroposterior From front to back. When a chest x-ray is taken with the back against the film plate and the x-ray machine in…
- Antipsychotic A medication (or another measure) that is believed to be effective in the treatment of psychosis. For…
- Ulocarcinoma Cancer of the gums. It is often associated with the use of smokeless (chewing) tobacco. Diagnosis is by…
- Macrocytic 1. Any abnormally large cell. The opposite of macrocytic is microcytic (an abnormally small cell). 2. An…
- Amniotic sac Popularly and more commonly known as the bag of waters. See: Bag of waters