Definition of eructation in English:
 eructation
noun ˌɪrʌkˈteɪʃ(ə)nˌiːrʌkˈteɪʃ(ə)nɛrʌkˈteɪʃ(ə)nəˌrəkˈteɪʃ(ə)n
formal A belch.
 I heard what sounded like a half-stoppered eructation
mass noun the only complaint that still tormented her was eructation
 Example sentencesExamples
-  It is certainly not the result of eructation from ruminants.
 -  Normally, this gas is expelled by the animal through eructation or belching.
 -  This may be accompanied by sourish and burning eructations, bowel discharges that contain sour and fermented material.
 -  The main symptoms described were diarrhea alternating with constipation (constipation predominant), abdominal bloating, pain (particularly post-prandial), non-acid eructation, and fatigue.
 -  It is specifically very effective for diarrhea and digestive problems especially associated with an acid digestive system with acid eructations, diarrhea and abdominal pains.
 
Origin
  
Late Middle English: from Latin eructatio(n-), from the verb eructare, from e- (variant of ex-) 'out' + ructare 'belch'.
   Definition of eructation in US English:
 eructation
nounəˌrəkˈteɪʃ(ə)nəˌrəkˈtāSH(ə)n
formal A belch.
 I heard what sounded like a half-stoppered eructation
mass noun the only complaint that still tormented her was eructation
 Example sentencesExamples
-  Normally, this gas is expelled by the animal through eructation or belching.
 -  The main symptoms described were diarrhea alternating with constipation (constipation predominant), abdominal bloating, pain (particularly post-prandial), non-acid eructation, and fatigue.
 -  This may be accompanied by sourish and burning eructations, bowel discharges that contain sour and fermented material.
 -  It is specifically very effective for diarrhea and digestive problems especially associated with an acid digestive system with acid eructations, diarrhea and abdominal pains.
 -  It is certainly not the result of eructation from ruminants.
 
Origin
  
Late Middle English: from Latin eructatio(n-), from the verb eructare, from e- (variant of ex-) ‘out’ + ructare ‘belch’.