MELAENA
\mˈɛliːnə], \mˈɛliːnə], \m_ˈɛ_l_iː_n_ə]\
Definitions of MELAENA
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A name given to vomiting of black matter, ordinarily succeeded by evacuations of the same character. It seems to be often a variety of haematemesis. The Black Vomit in yellow fever is owing to a morbid secretion from the lining membrane of the stomach and small intestines mixed with blood. Melaena also signifies hemorrhage from the intestines.
By Robley Dunglison
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Blackening of feces from blood-pigments.
By Willam Alexander Newman Dorland