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confocal
[ kon-foh-kuhl ]
adjective
, Mathematics.
- having the same focus or foci.
confocal
/ kɒnˈfəʊkəl /
adjective
- having a common focus or common foci
confocal ellipses
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Example Sentences
Two ellipsoids in which the principal sections lie in the same planes, and have the same foci, are called confocal.
From Project Gutenberg
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