adjective cir·cu·lar \ˈsər-kyə-lər\

: shaped like a circle or part of a circle

: moving or going around in a circle

: incorrectly using a statement that may not be true to prove an idea or thought that would be false if the original statement was not true

Full Definition of CIRCULAR

a :  having the form of a circle :  round <a circular orbit>
b :  moving in or describing a circle or spiral <a circular staircase>
a :  of or relating to a circle or its mathematical properties <a circular arc>
b :  having a circular base or bases <a circular cylinder>
:  marked by or moving in a cycle
:  being or involving reasoning that uses in the argument or proof a conclusion to be proved or one of its unproved consequences
:  intended for circulation <a circular letter>
cir·cu·lar·i·ty \ˌsər-kyə-ˈler-ə-tē, -ˈla-rə-\ noun
cir·cu·lar·ly \ˈsər-kyə-lər-lē\ adverb
cir·cu·lar·ness noun

Examples of CIRCULAR

  1. That planet has a more circular orbit than our planet does.
  2. <a rather circular discussion of the problem that never addresses it directly>

Origin of CIRCULAR

Middle English circuler, from Middle French, from Late Latin circularis, from Latin circulus circle
First Known Use: 15th century

Other Mathematics and Statistics Terms

abscissa, denominator, divisor, equilateral, exponent, hypotenuse, logarithm, oblique, radii, rhomb



: a printed sheet (such as an advertisement) that is given or sent to many people at the same time

Full Definition of CIRCULAR

:  a paper (as a leaflet) intended for wide distribution

Examples of CIRCULAR

  1. According to the circular, eggs are on sale this week.
  2. <promptly tosses out those advertising circulars that come in the newspaper>

First Known Use of CIRCULAR


Other Printing Terms

epigraph, errata, leader, mechanical, notch, tittle, underscore, widow


adjective cir·cu·lar \ˈsər-kyə-lər\   (Medical Dictionary)

Medical Definition of CIRCULAR

:  manic-depressive; especially :  bipolar 3 <the exalted phase of the mental circular state—Havelock Ellis>


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