isolated point

American  

noun

1. Mathematics. a point in a set such that the neighborhood of the point is devoid of any other points belonging to the set.

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Example Sentences

Figure 19.12 An isolated point charge Q with its electric field lines in blue and equipotential lines in green.

From Textbooks • Aug. 12, 2015

Advancing cautiously to an isolated point upon the brink, I lay upon my face, and peered down into the spectral void.

From John L. Stoddard's Lectures, Vol. 10 (of 10) Southern California; Grand Canon of the Colorado River; Yellowstone National Park by Stoddard, John L. (John Lawson)

"The castle was not then an isolated point of rock as we now see it, but formed part of a group of defences."

From A Little Swiss Sojourn by Howells, William Dean

Thus much concerns the character of this worship, which appears, like an isolated point, projecting from a religious system, otherwise confined to the western parts of Greece.

From The History and Antiquities of the Doric Race, Vol. 1 of 2 by Müller, Karl Otfried

The rebels never attacked our whole line, but always threw superior forces on some weak and isolated point.

From Diary from March 4, 1861, to November 12, 1862 by De Gurowski, Adam G., count