WordReference Random House Learner's Dictionary of American English © 2014
cir•cu•lar /ˈsɝkyəlɚ/USA pronunciation
having the form of a circle; round:A bright, circular object suddenly appeared in the sky.
[usually: before a noun] of or relating to a circle:the circular diameter.
moving in or forming a circle or a circuit:a circular path.
Philosophyattempting to prove a conclusion by using a statement that depends on the conclusion:a circular argument.
[before a noun](of a letter, etc.) intended for general circulation.
a letter or notice intended for the public or for anyone to see:She posted the circular on the bulletin board.
cir•cu•lar•i•ty/ˌsɝkyəˈlærɪti/USA pronunciationn. [uncountable]
Collins Concise English Dictionary © HarperCollins Publishers::
circular /ˈsɜːkjʊlə/ adj
- of, involving, resembling, or shaped like a circle
- (of arguments) futile because the truth of the premises cannot be established independently of the conclusion
- travelling or occurring in a cycle
- (of letters, announcements, etc) intended for general distribution
circularity /ˌsɜːkjʊˈlærɪtɪ/, ˈcircularness n ˈcircularly adv
- a printed or duplicated advertisement or notice for mass distribution
'circular' also found in these entries: