IPA: /ˈsɜːr.kjʊ.lər/
KK: /ˈsɜr.kjʊ.lər/
Having the shape of a circle or moving in a circular direction.
The children played with a circular ball in the park.
A printed message or advertisement that is distributed to many people.
The company sent out a circular to inform customers about the new product launch.
Circular → It is formed from "circu-" (from Latin "circus", meaning circle) and "-ar" (a suffix used to form adjectives). The word "circular" describes something that is shaped like a circle or relates to a circle.
Think of the word 'circle' which is at the root of 'circular' — this helps you remember that something circular is shaped like a circle.