| noun | an advertisement (usually printed on a page or in a leaflet) intended for wide distribution “he mailed the circular to all subscribers” |
| adjective | having a circular shape |
| adjective | describing a circle; moving in a circle “the circular motion of the wheel” |
| circulate | verb | cause be distributed |
| circularize | verb | canvass by distributing letters |
| circularise | verb | canvass by distributing letters |
| roundness | noun | the property possessed by a line or surface that is curved and not angular |
| circle | noun | 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 |
| circularity | noun | the roundness of a 2-dimensional figure |