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).
Phenylketonuria
Phenylketonuria: The inherited inability to metabolize (process) the essential amino acid phenylalanine due to complete or near-complete deficiency of the enzyme phenylalanine hydroxylase. Newborns are screened for phenylketonuria (PKU) by…
Read the definitionRandom terms
Show more- Deep vein thrombosis Deep vein thrombosis: A blood clot (thrombus) in a deep vein in the thigh or leg. The clot can break off as…
- Felty syndrome A complication of long-standing rheumatoid arthritis characterized by the presence of 3 conditions --…
- Glioma A brain tumor that begin in a glial, or supportive, cell, in the brain or spinal cord. Malignant gliomas are…
- Growth, normal See: Normal growth
- Microscope, simple A microscope that has a single converging lens (or a combination of lenses that function optically as a…
- Typhus One of a group of acute infections caused by rickettsiae, transmitted by arthropods (lice, fleas, mites), and…
- GI tract Short for gastrointestinal tract. See: Gastrointestinal tract
- Occupational disease A disease due to a factor in a person's occupation. For example, lung disease in miners. Occupational…
- Lumpectomy The surgical removal of a small tumor (a lump) which may or may not be benign (or malignant). Lumpectomy has…
- Coitus interruptus A method of contraception, also called withdrawal, in which the man withdraws his penis from the vagina…
- Iodine deficiency Iodine is a natural requirement of our diets. Iodine deficiency can lead to inadequate production of thyroid…
- Aristolochia fangchi A Chinese herb that is injurious to the kidney and is also associated with an increased risk of cancer of the…