protopectin

[ proh-tuh-pek-tin ]

noun

, Biochemistry.

1. any of the class of water-insoluble pectic substances that are found in the rind of citrus fruits or in apple peels and that are hydrolyzed to pectin or pectic acid.

Word History and Origins

Origin of protopectin¹

First recorded in 1905–10; proto- + pectin