amyloid

noun

am·​y·​loid ˈa-mə-ˌlȯid 

: a waxy translucent substance consisting primarily of protein that is deposited in some animal organs and tissues under abnormal conditions (such as Alzheimer's disease) compare beta-amyloid

amyloid adjective

Examples of amyloid in a Sentence

Recent Examples on the Web

Anti-amyloid therapies are now being tested in presymptomatic people with elevated amyloid burden in the AHEAD 3-45 clinical trial, which completed recruitment in 2024. —Elizabeth Bevins, STAT, 16 June 2026

Those tests include amyloid and tau PET scans to help detect amyloid plaque and tau tangles in the brain, while allowing for earlier detection and monitoring disease progression, according to the American Brain Foundation. —Wendy Coschignano-Ford, The Orlando Sentinel, 13 June 2026

This process flushes out toxic metabolic byproducts, including amyloid-beta. —Julian Hayes Ii, Forbes.com, 27 May 2026

During deep sleep, the brain’s glymphatic system clears metabolic waste including proteins linked to Alzheimer’s disease, and research shows even one night of sleep deprivation can increase amyloid deposits in the brain. —Allison Palmer, Sacbee.com, 19 May 2026

Word History

First Known Use

1866, in the meaning defined above

Phrases Containing amyloid

• amyloid-beta
• amyloid-beta peptide
• amyloid-beta protein
• beta-amyloid
• beta-amyloid peptide
• beta-amyloid protein

Rhymes for amyloid

• adenoid
• alkaloid
• amoeboid
• aneroid
• arachnoid
• asteroid
• benzenoid
• carcinoid
• celluloid
• coronoid
• humanoid
• mongoloid

Medical Definition

amyloid

noun

am·​y·​loid

ˈam-ə-ˌlȯid

1

: a nonnitrogenous starchy food

2

: a waxy translucent substance consisting primarily of protein that is deposited in some animal organs and tissue under abnormal conditions (as in Alzheimer's disease) see beta-amyloid

amyloid adjective