circular
Abbr. cir, circ.
1.
2.
3. Circuitous; roundabout: took a circular route to the office.
4. Marked by reasoning in a circle: a circular theory.
5. Addressed or distributed to a large number of persons.
noun
A printed advertisement, directive, or notice intended for mass distribution.
[Middle English circuler, from Anglo-Norman, from Latin circulāris, from circulus, circle. See
cir