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).
Marriage, cousin
A form of consanguinity. Everyone carries recessive alleles, genes that are generally innocuous in the heterozygous state but that in the company of another gene of the same type are capable of causing disease. We are all genetic…
Read the definitionRandom terms
Show more- Afferent vessel A vessel that carries blood toward the heart. A vein or venule
- Hemi- Prefix meaning one half, as in hemiparesis, hemiplegia, and hemithorax. From the Greek hemisus meaning half…
- Electrolyte An electrolyte is a substance that will dissociate into ions in solution and acquire the capacity to conduct…
- Surgery, YAG laser The use of a YAG (yttrium-aluminum-garnet) laser to do surgery. One use for a YAG laser in surgery is to…
- SRY Sex region Y, a region on the Y chromosome that determines the sex of the individual. SRY is necessary and…
- Start, sleep See: Hypnic jerk
- Stenosis, subaortic Narrowing of the left ventricle of the heart just below the aortic valve through which blood must pass on its…
- DSS1 Or Dss1. A small protein important to the process of error-free DNA repair by recombination
- Gingivitis, Vincent This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Bronchitis, chronic Defined clinically as a daily cough with production of sputum for 3 months, two years in a row. In chronic…
- FluMist FluMist™. See: Nasal flu vaccine
- Effusion Too much fluid, an outpouring of fluid. A hemorrhagic effusion is one that has blood within the fluid. A…