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).
Prescription drug
A drug requiring a prescription, as opposed to an over-the-counter drug, which can be purchased without one. The word 'prescription' comes from the Latin 'praescriptus' compounded from 'prae', before + scribere, to write = to write before…
Read the definitionRandom terms
Show more- Immunization, measles Measles: See Immunization, MMR
- Polymox See: Amoxicillin
- Head and neck cancer Head and neck cancer: The common carcinomas of the oral cavity, pharynx, and larynx as well as other tumors…
- Globus A word straight from the Latin, meaning (not unexpectedly) a globe or sphere. The word 'globus' is used in a…
- Arteriosclerotic aneurysm A localized widening (aneurysm) of a vessel that occurs because the vessel wall is weakened by…
- Decubitus Lying down. A decubitus ulcer is a bed sore, the consequence of lying in one position too long. The Latin…
- Gene, Y-linked A gene on the Y chromosome. (Y-linkage is analogous to X-linkage (the presence of a gene on the X chromosome)…
- Mitochondrion Singular of mitochondria. The mitochondria are normal structures called organelles in cells. They are located…
- Hysterosalpingogram (HSG) A hysterosalpingogram imaging test that is used to examine the cavity of the uterus and Fallopian tubes. In a…
- Gametic Pertaining to the gamete (the sperm or eggs)
- Heartworm Dirofilaria immitis. A common parasite of dogs in many parts of the world that occurs in other animals…
- Wegener's granulomatosis Wegener's granulomatosis: An uncommon type of inflammation of small arteries and veins (vasculitis) that…