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).
Bioactive
Having an effect upon a living organism, tissue, or cell. Biologically active. Antibiotic, enzymes, and vitamins are all bioactive substances
Read the definitionRandom terms
Show more- Blister, blood A blister full of blood due to a pinch, bruise or repeated friction. A blister is medically termed a vesicle…
- Ophthalmic migraine Migraine involving the eyes but without headache. Migraine, due to a spasm of blood vessels in the brain…
- C peptide See: C-peptide
- Gestation Period of time from conception to birth
- Eight-day measles Measles: An acute highly contagious viral disease with fever, runny nose, cough, red eyes, and a spreading…
- Disease, Niemann-Pick See: Niemann-Pick disease
- Gametophobia An abnormal and persistent fear of being married. Sufferers of gametophobia experience undue anxiety even…
- Fire gilding A perilous process for gold-plating in which an amalgam of mercury and gold is applied to an object and then…
- Bicuspid aortic valve Whereas the normal aortic valve in the heart has three flaps (cusps) that open and close, a bicuspid valve…
- Common cold Common cold: A viral upper respiratory tract infection. This contagious illness can be caused by many…
- Tick typhus, Queensland See: Queensland tick typhus
- Methadone A synthetic opiate. The most common medical use for methadone is as a legal substitute for heroin in…