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View definitions for foci

foci

noun as in center of attraction

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Example Sentences

In an orbit made elliptical by the planetary attraction the sun necessarily occupies one of the foci of the ellipse.

That an ellipse may be given any required proportion of width to length by locating the foci at the requisite distance apart.

That the proportion of length to width in an ellipse is determined by the distance apart of the foci.

The curve thus traced will be an ellipse having the pins at the two points which are called its foci.

These are at points on the principal axis that are twice as far from O, the center of the lens, as are the principal foci.

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On this page you'll find 22 synonyms, antonyms, and words related to foci, such as: focal point, target, spotlight, limelight, core, and center.

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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