amyloid beta

noun
variants: or amyloid-beta \ ˈa-​mə-​ˌlȯid-​ˈbā-​tə How to pronounce amyloid beta (audio) , chiefly British  -​ˌbē-​tə \ or amyloid beta protein or amyloid-beta protein or amyloid beta peptide or amyloid-beta peptide

Definition of amyloid beta

: beta-amyloid In Alzheimer's, the possible infectious agent under scrutiny is a protein called amyloid-beta best known as the main ingredient in the hulking, sticky gobs of plaque found in the brains of people with the disease.— Laura Sanders In Alzheimer's patients, the amyloid beta protein somehow goes off track and clumps together in sticky plaques that destroy healthy brain tissue.— Nancy McVicar

First Known Use of amyloid beta

1987, in the meaning defined above

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The first known use of amyloid beta was in 1987

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Dictionary Entries Near amyloid beta

amyloid

amyloid beta

amyloidosis

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Cite this Entry

“Amyloid beta.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amyloid%20beta. Accessed 21 Sep. 2021.

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More Definitions for amyloid beta

amyloid beta

noun
variants: or amyloid beta protein or amyloid beta peptide

Medical Definition of amyloid beta

: beta-amyloid Small amounts of amyloid beta are generated as an ordinary metabolic byproduct and are believed to do no harm, but larger amounts seem to be tied to Alzheimer's.— January W. Payne, U.S. News & World Report, 1 Aug. 2009 In Alzheimer's patients, the amyloid beta protein somehow goes off track and clumps together in sticky plaques that destroy healthy brain tissue. — Nancy McVicar, The Sun-Sentinel (Fort Lauderdale, Florida), 19 Feb. 2002 The treatment targets the buildup of lumps of protein fragments called amyloid beta peptides, which is the dominant theory of the cause of Alzheimer's.— Victoria Colliver, The San Francisco Chronicle, 8 May 2009

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