Demulcent n. (Med.) A substance, usually of a mucilaginous or oily nature, supposed to be capable of soothing an inflamed nervous membrane, or protecting it from irritation. Gum Arabic, glycerin, olive oil, etc., are demulcents.
... and is more wholesome and nutritive. Figs are supposed to be more nutritious by having their sugar united with a large portion of mucilaginous matter, which, from being thought to be of an oily nature, has been long esteemed an useful demulcent and pectoral; and it is chiefly with a view of these effects that they ... — The Botanist's Companion, Vol. II • William Salisbury
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