cir·cu·lar (sûr'kyə-lər)
adj.

1. Of or relating to a circle.
2. 1. Shaped like or nearly like a circle; round.
   2. Moving in or forming a circle.
3. Circuitous; roundabout: took a circular route to the office.
4. Using a premise to prove a conclusion that in turn is used to prove the premise: a circular argument.
5. Defining one word in terms of another that is itself defined in terms of the first word.
6. Addressed or distributed to a large number of persons.

n.
A printed advertisement, directive, or notice intended for mass distribution.

[Middle English circuler, from Anglo-Norman, from Latin circulāris, from circulus, circle. See circle.]

circularity cir'cu·lar'i·ty (-lăr'ĭ-tē) n.
circularly cir'cu·lar·ly adv.

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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