knitting in the round

(mathematics) A certain circle in a coordinate plane associated with a quadratic equation, having the property that the solutions of the equation are the horizontal coordinates of the intersections of the circle with the horizontal axis.

plural of closed-circuit television

The difference of electrical potential between two terminals of a device when disconnected from any circuit. The open-circuit voltage of a cell is its EMF (electromotive force).

A disease of the liver in which the normal lobular architecture is lost, with fibrosis and later nodular regeneration.

(astronomy) A great circle on the celestial sphere, perpendicular to the horizon, that passes through the zenith and nadir

(colloquial) It's none of your business, or not your responsibility; an exhortation to stay out of a volatile or delicate situation.

(education) Time spent by a group sitting together to take part in an activity.

plural of circle time

(geometry) A circumcircle.