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Answer for the clue "Any of various plant glucosides that form soapy lathers when mixed and agitated with water", 7 letters:

Alternative clues for the word saponin

Used in detergents and foaming agents and emulsifiers

Word definitions for saponin in dictionaries

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Saponin \Sap"o*nin\, n. [L. sapo, -onis soap: cf. F. saponine.] (Chem.) A poisonous glucoside found in many plants, as in the root of soapwort ( Saponaria ), in the bark of soap bark ( Quillaia ), etc. It is extracted as a white amorphous powder, which...

Wiktionary Word definitions in Wiktionary
n. (context organic chemistry steroid English) Any of various steroid glycosides found in plant tissues that dissolve in water to give a soapy froth.

WordNet Word definitions in WordNet
n. any of various plant glucosides that form soapy lathers when mixed and agitated with water; used in detergents and foaming agents and emulsifiers

Wikipedia Word definitions in Wikipedia
Saponins are a class of chemical compounds found in particular abundance in various plant species. More specifically, they are amphipathic glycosides grouped phenomenologically by the soap-like foaming they produce when shaken in aqueous solutions, and...

Usage examples of saponin.

It was deeper, and in the rock nearby was a basin-like depression which she used to pound the saponin out of the soaproots.

A fragrant, spicy perfume filled the air, and when she dipped in a soft scrap of leather, the solution of plant saponin foamed slightly, but it would need no rinsing and leave only a pleasant scent.

It contains resin and mucilage, in addition to saponin, which is its leading principle, and by virtue of which decoctions of the root produce a soapy froth.

She rinsed the roots, scooped water into a depression, and pounded the soaproot to release the rich sudsy saponin.

Other constituents are a crystalline saponin- like glucoside, an amorphous, bitter glucoside, which is a modification of tannin, and is known as Ipecacuanhic acid, choline, resin, pectin, starch, sugar, calcium oxalate, odorous, fatty matter and a disagreeable-smelling volatile oil.

Another group of steroids, found in certain plants are called saponins (sap'oh-ninz.

Digitonin, which is a cardiac depressant, containing none of the physiological action peculiar to Digitalis, and is identical with Saponin, the chief constituent of Senega root.