See Also: watershed(medicine)
watershed(dictionary)
watershed(dictionary)
watershed infarction(medicine)

watershed (iou)



watershed noun. E19.
[formed as WATER-RAT + SHED noun1, after German Wasserscheide.]
The line separating waters flowing into different rivers, basins, or seas; a narrow ridge between two drainage areas. E19.
A. J. Toynbee A ridge that is the watershed between the Atlantic and the basin of the River Parana.
b. fig. A turning-point in affairs, a crucial time or occurrence. L19.
M. Meyer The publication of this book marked a watershed in their relationship.
a. The slope down which the water flows from a watershed. M19.
b. The whole gathering ground of a river system. L19.
A structure for throwing off water. L19.