Origin: Latin suffix -ular
Circular has 6 different meanings across 2 categories:
Synonym of flyer: a printed advertisement, directive, or notice intended for mass circulation.
"The company distributed hundreds of circulars to inform customers about their new summer sale."
In plain English: A circular is an official message sent to many people at once, usually by email or mail.
"The circular was sent to all staff members announcing the new meeting time."
To distribute circulars to or at.
"The marketing team decided to send out circulars to every household in the neighborhood."
In plain English: To circular something is to move it around and back to where you started without going anywhere new.
"The argument kept going in circles until we found a solution."
Of or relating to a circle.
"The circular window at the top of the tower lets light into the center of the room."
In plain English: Circular means shaped like a circle with no corners and all points equally distant from the center.
"The table has a circular top that fits perfectly in our small kitchen corner."
Usage: Use the adjective form "circular" when describing something shaped like a round disk rather than using it as a synonym for "round." Avoid confusing this term with the noun meaning, which refers specifically to a printed notice intended for mass distribution.
The word "circular" comes from the Middle English term circuler, which was borrowed from Old French and ultimately derived from the Latin circulus. This root means a small ring or circle, tracing its origin back to the larger structure known as circus.