### Circular

**CIRCULAR**, *adjective*

**1.** In the form of a circle; round; circumscribed by a circle; spherical; as, the sun appears to be *circular*

**2.** Successive in order; always returning.

**3.** Vulgar; mean; circumforaneous; as a *circular* poet.

**4.** Ending in itself; used of a paralogism, where the second proposition at once proves the first, and is proved by it.

**5.** Addressed to a circle, or to a number of persons having a common interest; as a *circular* letter.

**6.** *circular* lines, such straight lines as are divided from the divisions made in the arch of a circle; as the lines of sines, tangents and secants, on the plain scale and sector.

**7.** *circular* numbers, are those whose powers terminate in the roots themselves; as 5 and 6, whose squares are 25 and 36.

**8.** *circular* sailing, is the method of sailing by the arch of a great circle.

**CIRCULAR**, *noun* A *circular* letter, or paper.