protopectin

American

[proh-tuh-pek-tin] / ˌproʊ təˈpɛk tɪn /

noun

Biochemistry.

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.

First recorded in 1905–10; proto- + pectin

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023