Definition of beta-amyloid in English:

beta-amyloid

noun

Biochemistry
  • A polypeptide derived from a larger membrane glycoprotein (amyloid precursor protein), which accumulates in the brain in Alzheimer's disease and certain other neurodegenerative diseases, typically forming amyloid plaques; also called amyloid beta; frequently attributive.

Origin

1980s; earliest use found in The Lancet.