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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Advanced paternal age
A man who is age 40 years or older at the time of conception. (There is no universally accepted definition of advanced paternal age but this criterion is often used in genetic counseling.) Advanced paternal age is associated with an…
Read the definitionRandom terms
Show more- Erythroplakia A reddened patch with a velvety surface found in the mouth
- Fracture, clay-shoveler's An uncommon breakage of the spine of the vertebrae from the lower neck or upper back as a result of stress…
- House surgeon Literally, a surgeon in the house, the house being the hospital. The meaning of the term house surgeon varies…
- Urine infection in children See: Urinary tract infection in children
- Arrhythmia An abnormal heart rhythm. In an arrhythmia the heartbeats may be too slow, too rapid, too irregular, or too…
- Ca Abbreviation for circa, meaning about or approximately, as in ca. 1 mg
- Antiviral agent An agent that kills viruses or suppresses their replication and, hence, inhibits their capability to multiply…
- Neurotoxic Poisonous to nerves or nerve tissue. Mercury and lead are neurotoxic
- Meter, pH See: pH meter
- Randomly In a random manner, as by chance alone. The participants in the trial were randomly assigned to receive…
- Xerophagia A dry diet. Literally, dry eating. From the Greek 'xeros' meaning 'dry' + 'phago' meaning 'to eat.
- Benign paroxysmal positional vertigo (BPPV) A balance disorder that results in the sudden onset of dizziness, spinning, or vertigo when moving the head