Below are possible answers for the crossword clue Closed plane curve.
6 letter answer(s) to closed plane curve
CIRCLE
a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra; "they had excellent seats in the dress circle"
a road junction at which traffic streams circularly around a central island; "the accident blocked all traffic at the rotary"
an unofficial association of people or groups; "the smart set goes there"; "they were an angry lot"
any circular or rotating mechanism; "the machine punched out metal circles"
ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point; "he calculated the circumference of the circle"
form a circle around; "encircle the errors"
Group of friends/contacts
move in circles
movement once around a course; "he drove an extra lap just for insurance"
something approximating the shape of a circle; "the chairs were arranged in a circle"
street
Other crossword clues with similar answers to 'Closed plane curve'