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The intersection of a sphere and a plane which passes through the center of that sphere is called a great circle. Is there a name for the intersection of a sphere and a plane which does not pass through the center of the sphere? Of course, like a great circle, it is a circle, but I'm wondering if there is any special terminology that would indicate its relation to the sphere.

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Yes: sensibly enough, it's called a small circle.

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    I was hoping for "OK circle" :-(2017-01-03