watershed

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wa·ter·shed

(wah'tĕr-shed),
1. The area of marginal blood flow at the extreme periphery of a vascular bed.
2. Slopes in the abdominal cavity, formed by projections of the lumbar vertebrae and the pelvic brim, that determine the direction in which a free effusion gravitates when the body is supine.

wa·ter·shed

(waw'tĕr-shed)
1. The area of marginal blood flow at the extreme periphery of a vascular bed.
2. Slopes in the abdominal cavity, formed by projections of the lumbar vertebrae and the pelvic brim, which determine the direction in which a free effusion will gravitate when the body is in a supine position.

watershed

a dividing line, such as a ridge, between two different river systems.

wa·ter·shed

(waw'tĕr-shed)
1. Area of marginal blood flow at the extreme periphery of a vascular bed.
2. Slopes in the abdominal cavity, formed by projections of the lumbar vertebrae and the pelvic brim.
References in periodicals archive ?
The focus areas of the schemes is development of water sheds, improve the ground water levels, to increase area under irrigation and increase the green cover by planting more trees.
This is a chance to raise awareness about these valuable water sheds and help ensure that these fish will return year after year," said Van Havig, Rock Bottom Portland Brewmaster.