melena is a topic covered in the Taber's Medical Dictionary.

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(mĕ-lē′nă )

[Gr. melaina, black]
Black tarry feces caused by the digestion of blood in the gastrointestinal tract. It is common in the newborn and in adult patients with gastrointestinal bleeding from the esophagus, stomach, or proximal small intestine.
melenic (mĕ-lēn′ik ), adj.

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