1
- having the form of a circle圆形的, 环形的：
the building features a circular atrium.
这所建筑以环形门廊为特色。
1.1
- (of a movement or journey) starting and finishing at the same place and often following roughly the circumference of an imaginary circle（活动, 旅行）循环的, 环绕一圈的：
a circular walk.
环程散步。
2
- Logic (of an argument) already containing an assumption of what is to be proved, and therefore fallacious【逻】（论点）因包含待证假设因而是谬误的, （使用）循环论证的。
3
- attrib.(of a letter or advertisement) for distribution to a large number of people（信件, 广告）供流传的。
- a letter or advertisement which is distributed to a large number of people通函, 通知, 通告; （广告）传单。
派生词
circularity
nouncircularly
adverb词源
late Middle English: from Old French circulier, from late Latin circularis, from Latin circulus 'small ring' （see CIRCLE）.