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.
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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).
Fragile X chromosome
An X chromosome with a heritable fragile site associated with a frequent form of mental retardation -- the fragile X syndrome. The fragile X chromosome was first sighted by Dr. Herbert A. Lubs in 1969 who termed it the 'marker X.'. The…
Read the definitionRandom terms
Show more- Thoracic outlet syndrome Thoracic outlet syndrome: A condition due to compromise of blood vessels or nerve fibers between the armpit…
- Phenylalanine hydroxylase deficiency The inherited inability to process the amino acid phenylalanine normally, due to deficiency of the enzyme…
- Cytoskeleton The scaffolding structure of the cell cytoplasm. The cytoskeleton consists of intermediate filaments, actin…
- MDR Minimal daily requirement. Multidrug resistant
- Thyroid hormone organification defect IIb See Pendred syndrome
- Cranial nerve, eleventh The eleventh cranial nerve is the accessory nerve. The twelve cranial nerves, the accessory nerve included…
- Arteritis, Takayasu Also called giant cell arteritis or cranial arteritis, this is a serious disease characterized by…
- Movement, fetal Movement of the fetus in the womb. The first fetal movements felt by the mother during pregnancy (quickening)…
- Radionuclide An unstable form of a chemical element that radioactively decays, resulting in the emission of nuclear…
- Induction therapy Therapy: Treatment designed as a first step toward reducing the number of cancer cells. Often just referred…
- Sternal rib One of the first 7 pairs of ribs. A rib is said to be a 'sternal' rib or a 'true' rib if it attaches to the…
- Common migraine Migraine without aura. The most frequent type, accounting for about 80-85% of migraine. See: Migraine