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).
Alkaptonuria
Alkaptonuria: A genetic metabolic disorder due to deficiency of the enzyme homogentisic acid (HGA) dioxygenase. Deficiency of this enzyme leads to the three cardinal features of alkaptonuria --the presence of homogentisic acid in the…
Read the definitionRandom terms
Show more- NIDA Stands for the National Institute on Drug Abuse, one of the National Institutes of Health in the U.S., whose…
- Bone, sesamoid See Sesamoid bone
- Intolerance, lactose The inability to digest lactose, a sugar component of milk and most other dairy products. Lactose is…
- Dissection The process of cutting apart or separating tissue as, for example, in the study of anatomy or in the course…
- Ulna The larger of the two long bones within the forearm. (The smaller one is the radius). The ulna is on the same…
- Phytotoxin A poison in a plant. Abrin and ricin are examples of phytotoxins. Abrin comes from the seeds of a plant…
- Iressa Brand name for gefitinib, a drug that attaches to the epidermal growth factor receptor (EGFR) on the surfaces…
- Interatrial septum The partition separating the upper chambers (the atria) of the heart
- Algophobia An abnormal and persistent fear of pain. The fear is excessive, beyond that which is expected under the…
- C2 (cervical vertebra) C2 is the symbol for the second cervical vertebra, which is also called the axis. It is so-named because the…
- Interleukin-4 A protein that stimulates the immune system to develop mast cells, resting T-cells, and activated B-cells…
- Vaccination, pneumococcal pneumonia