[dis-pep-shuh, -see-uh]
deranged or impaired digestion; indigestion (opposed to eupepsia ).
Also, dyspepsy [dis-pep-see] .

1650–60; < Latin < Greek dyspepsía, equivalent to dys- dys- + péps(is) digestion + -ia -ia

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World English Dictionary
dyspepsia or dyspepsy (dɪsˈpɛpsɪə, dɪsˈpɛpsɪ)
indigestion or upset stomach
[C18: from Latin, from Greek duspepsia, from dys- + pepsis digestion]
dyspepsy or dyspepsy
[C18: from Latin, from Greek duspepsia, from dys- + pepsis digestion]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

dyspepsia dys·pep·sia (dĭs-pěp'shə, -sē-ə)
Disturbed digestion; indigestion.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
dyspepsia   (dĭs-pěp'shə, -sē-ə)  Pronunciation Key 
Difficulty in digesting food; indigestion.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


any or all of the symptoms-abdominal discomfort, belching, flatulence, aversion to eating, nausea, vomiting, diarrhea, constipation, heartburn-associated with the malfunctioning of the digestive system. Indigestion may be caused by disease, but it primarily occurs because of stress, improper eating habits, excessive smoking, exorbitant consumption of coffee or alcohol, or hypersensitivity to particular foods. Indigestion can be alleviated by avoiding the foods or drinks that seem to cause it and by not smoking

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Finally, it is possible that your symptoms may be caused by functional dyspepsia.
Sometimes, heartburn can be confused with another stomach problem called dyspepsia.
The dyspepsia of the left blogosphere is less easily explained, though.
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