Medical Definition of pectic substance
: any of a group of complex colloidal carbohydrate derivatives of plant origin that contain a large proportion of units derived from galacturonic acid and include protopectins, pectins, pectinic acids, and pectic acids
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“Pectic substance.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/pectic%20substance. Accessed 19 May. 2022.
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