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Any of several inflammatory disorders of the intestines, especially the colon, characterized by abdominal pain, fever, and severe diarrhea often with blood and mucus in the stool, usually caused by infection with bacteria or parasitic protozoans.

[Middle English dissenterie, from Old French, from Latin dysenteria, from Greek dusenteriā : dus-, dys- + enteron, intestine; see en in Indo-European roots.]

dys′en·ter′ic adj.
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A infectious preceding history of infection, diseases especially viral or dysenteric, is crucial.
According to reports people who ate the food served as a part of the temple offering started vomiting and started showing dysenteric symptoms on Tuesday.
More than 80% of the Allied force was to succumb to dysenteric diarrhoea (the "Gallipoli Gallop") at some time during the campaign and a quarter of the troops had to be evacuated because of sickness.