Meaning of protopectin

pro•to•pec•tin

Pronunciation: (prō"tu-pek'tin), [key]
— n. Biochem.
  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. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.