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

If the amyloid diagnosis is confirmed, patients can be prescribed one of two monoclonal antibodies, both FDA-approved in 2023, that can slow disease progression by targeting and removing pathological amyloid deposits in the brain. —Juergen Eckhardt, Forbes.com, 22 July 2025

These newest findings on its effects related to amyloid deposits identified a protein called CagA — secreted by most strains of human H. pylori — as the key component. —F.d. Flam, Twin Cities, 2 July 2025

This approval allows Alnylam to target patients with transthyretin amyloid cardiomyopathy (ATTR-CM), a much larger population than those with ATTR polyneuropathy. —Josh Brown,sean Russo, CNBC, 9 June 2025

Lithium orotate helped the mice reduce production of the amyloid plaques and tau tangles, and allowed the microglial cells to remove the plaques much more effectively. —The Washington Post, San Diego Union-Tribune, 19 Aug. 2025

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
• anthropoid
• arachnoid
• asteroid
• benzenoid
• carcinoid
• celluloid
• coronoid
• humanoid

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