[medical] Graph of Waitrose market share 1984-2012. Created by me. Data obtained from http://www.fooddeserts.org/images/supshare.htm, or ultimately from Eurofood magazine. {waitrose, market share, graph, UK supermarket} ...
Found on
http://en.wikipedia.org/wiki/Watershed_Area_(medical)
[medical] Watershed area is the medical term referring to regions of the body that receive dual blood supply from the most distal branches of two large arteries, such as the splenic flexure of the large intestine are particularly susceptible to ischemia. The blood supply from the two vessels does not overlap. During times of blockage of one...
Found on
http://en.wikipedia.org/wiki/Watershed_area_(medical)

an area of a cerebral or cerebellar hemisphere that is distant from the circle of Willis, and where the vascular beds of two cerebral arteries meet and form anastomoses. At times of prolonged systemic hypotension, these areas are particularly susceptible to cerebral infarction (see watershed infarction).
Found on
http://www.encyclo.co.uk/local/21001

A topographic area within a line drawn connecting the highest points uphill of a drinking waterintake into which overland flow drains.
Found on
https://www.encyclo.co.uk/local/20094
No exact match found.