excretion of fat through the bowels
(steato- + Gr. rhoia a flow) excessive amounts of fats in the feces, as in malabsorption syndromes.
Steatorrhoea is used to describe increased fat in the faeces and is characterised by a pale, smelly, frothy stool. It is a feature of fat malabsorption and can be caused by a variety of factors.
Faecal matter that is frothy, foul-smelling and floats because of a high fat content. A finding that is typical in malabsorption syndromes. ... (27 Sep 1997) ... 
Particular type of diarrhoea caused by difficulty digesting fats. Can be a symptom of diseases of the pancreas or gall bladder.