WordReference Random House Unabridged Dictionary of American English © 2025
pro•to•pec•tin
(prō′tə pek′tin),USA pronunciation n. [Biochem.]
- Biochemistryany 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 pectinogen, pectose.
- proto- + pectin 1905–10
'protopectin' also found in these entries (note: many are not synonyms or translations):