I. ˈsər-kyə-lər adjective
Etymology: Middle English circuler, from Middle French, from Late Latin circularis, from Latin circulus circle
Date: 15th century
1.
a. : having the form of a circle : round
a circular orbit
b. : moving in or describing a circle or spiral
a circular staircase
2.
a. : of or relating to a circle or its mathematical properties
a circular arc
b. : having a circular base or bases
a circular cylinder
3. : circuitous , indirect
4. : marked by or moving in a cycle
5. : being or involving reasoning that uses in the argument or proof a conclusion to be proved or one of its unproved consequences
6. : 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
II. noun
Date: 1789
: a paper (as a leaflet) intended for wide distribution