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(Science: pharmacology) A medicated mass adapted for introduction into the rectal, vaginal or urethral orifice of the body, suppository bases are solid at room temperature but melt or dissolve at body temperature.

Commonly used bases are cocoa butter, glycerinated gelatin, hydrogenated vegetable oils, polyethylene glycols of various molecular weights and fatty acid esters of polyethylene glycol.

Origin: L. Suppositorium