Answer: conics

AnswerCrossword Clue
CONICSGeometrical figures
CONICSParabolas, e.g.
CONICSParabolas, ellipses, etc.
CONICSEllipses and parabolas
CONICSEllipses, parabolas, etc.
CONICSTheory of a branch of geometry.
CONICSGeometric curves
conics(used with a sing. v.) the branch of geometry that deals with conic sections
conicsCONIC, a geometric curve