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outer boundary

n. the outside boundary or surface of something [syn: periphery, fringe]

Usage examples of "outer boundary".

They were inside the circle, points of them touching the outer boundary of the circle at irregular intervals.

Just as the outer light reaches an inner boundary at our retina, so does the inner light meet with an outer boundary, set by the optical density of the medium spread out before the eye, Outer and inner light interpenetrate each other along the whole tract between these two boundaries, but normally we are not conscious of this process.

The dark sphere is growing, and as it spreads, its outer boundary will come closer to an edge of the Sag Arm—.

Repeat this process indefinitely, adding smaller and smaller triangles to extend the outer boundary of the figure.

Trying to ignore Sylenia's urgency, the engineer attempted to create an outer boundary, not caring if it felt wavery, tenuous.

The shadowed form resolved into a true human shape, and as it entered the outer boundary of the Fire’.

Within the outer boundary of trees, the land was divided into fields and plots by shorter, thinner hedges.

The low overhead had begun to climb at a shallow angle, and through the forest of eye-dazzling plumbing he could see a curving black wall that had to be the outer boundary of the interchange.

There was about twenty feet of open ground, and then a tall wooden wall marked the outer boundary of the Mission.