{ }[ L. dyspepsia, Gr. &unr_;, fr. &unr_; hard to digest; dys- ill, hard + &unr_; to cook, digest; akin to E. cook: cf. F. dyspepsie. See Dys-, and 3d Cook. ] (Med.) A kind of indigestion; a state of the stomach in which its functions are disturbed, without the presence of other diseases, or, if others are present, they are of minor importance. Its symptoms are loss of appetite, nausea, heartburn, acrid or fetid eructations, a sense of weight or fullness in the stomach, etc. Dunglison.