melanorrhea
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Melena — Stools or vomit stained black by blood pigment or dark blood products. * * * Passage of dark colored, tarry stools, due to the presence of blood altered by the intestinal juices. Cf.:hematochezia. SYN: melanorrhagia, melanorrhea. [G. melaina, fem … Medical dictionary
Melanorrhoea usitata — Illustration from Plantae Asiaticae Rariores Scientific classification King … Wikipedia