окръжност означава в английски

circle [circles]▼(geometry: set of points that are equally distant from a center)
noun
[UK: ˈsɜːk.l̩] [US: ˈsɝːk.l̩]

circuit [circuits]▼(that which encircles)
noun
[UK: ˈsɜːkɪt] [US: ˈsɝːkət]

circumference [circumferences]▼(line that bounds a circle or other two-dimensional object)
noun
[UK: sɜːˈk.ʌm.fə.rəns] [US: sərˈk.əm.frəns]

round [rounds]▼(circular object)
noun
[UK: ˈraʊnd] [US: ˈraʊnd]

incircle▼(the circle within a polygon that is tangent to each side)
noun
[UK: ɪnsˈɜːkəl] [US: ɪnsˈɜːkəl]