¦ ̷ ̷ ̷ ̷ ¦ ̷ ̷ noun
or beta-pleat·ed sheet ¦ ̷ ̷ ̷ ̷ ¦ ̷ ̷ ̷ ̷
: the structural arrangement of many proteins in which two or more short regions of the polypeptide chain align adjacently and are stabilized by hydrogen bonds into sheets with a pleated or accordionlike appearance — compare alpha-helix herein