(Medicine) Pathological difficulties with digestion.
Severe indigestion, especially chronic.
Synonym for indigestion.

ETYM Latin indigestio: cf. French indigestion. Related to In- not, and Digest.
Or dyspepsia; Any pain or discomfort in the stomach or abdomen due to problems in the digestive system.
A disorder of digestive function characterized by discomfort or heartburn or nausea; SYN. dyspepsia, stomach upset, upset stomach.