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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Natural killer cell
A cell that can react against and destroy another cell without prior sensitization to it. Natural killer (NK) cells are part of our first line of defense against cancer cells and virus-infected cells. NK cells are small lymphocytes that…
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Show more- Fever, undulant An infectious disease due to the bacteria Brucella that characteristically causes rising and falling fevers…
- Sprue, nontropical This condition results from an immune (allergic) reaction to gluten, a protein found in wheat and related…
- Lesion Pronounced 'lee-sion' with the emphasis on the 'lee,' a lesion can be almost any abnormality involving any…
- Metallomembrane endopeptidase (MME) A molecule that is also known as CALLA (common acute lymphocytic leukemia antigen), a cell surface…
- Nondisjunction Failure of paired chromosomes to disjoin (separate) during cell division so that both chromosomes go to one…
- Thorn test An early test for Addison's disease. The test is named for Dr. George W. Thorn who devised it. See: Thorn…
- Holandric inheritance Inheritance of genes on the Y chromosome. Since only males normally have a Y chromosome, Y-linked genes can…
- Breast aplasia Breast aplasia: A rare condition wherein the normal growth of the breast or nipple never takes place. They…
- Leper 1. Someone with leprosy (Hansen disease). The term leper is now in disfavor. 2. By extension, a pariah. A…
- Uterus, contraction of the The tightening and shortening of the uterine muscles. During labor, contractions accomplish two things: (1)…
- Nerve, hypoglossal The hypoglossal nerve is the twelfth cranial nerve. The twelve cranial nerves, the hypoglossal nerve…
- Polish disease Syphilis. Depending upon someone's thoughts as to where the disease came from, syphilis was also known as the…