| melena | 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) |
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| melena neonatorum | <paediatrics> Melena of the newborn or melana occurring in young infants. (05 Mar 2000) |
| melena spuria | <paediatrics> Passage in the stool of blood that has been swallowed, especially that swallowed by nurslings from a fissured nipple. (05 Mar 2000) |
| melena vera | <gastroenterology> True melena as distinguished from melena spuria. (05 Mar 2000) |