Melaena

Black or tarry stools. Caused by bleeding into the upper gut e.g. from a stomach ulcer

Melaena

• (n.) A discharge from the bowels of black matter, consisting of altered blood.
Found on http://thinkexist.com/dictionary/meaning/melaena/

melaena

1. <gastroenterology> The passage of dark, pitchy and grumous stools stained with blood pigments or with altered blood. ... 2. Black vomit. ... Origin: Gr. Melaina, feminine of Gr. Melas = black ... (18 Nov 1997) ...
Found on http://www.encyclo.co.uk/local/20973

melaena

Black tarry stools caused by bleeding into the gut (see Haematemesis).
Found on http://www.encyclo.co.uk/local/20896

Melaena

The presence of blood in faeces.
Found on http://www.gadsbywicks.co.uk/uploaded/3822.pdf
No exact match found