This is the 8699th most frequent German word.
kreises
"Kreises" means "circle's" or "district's" (genitive singular form).
Here 'Kreises' refers to the genitive singular form of 'Kreis', denoting possession, indicating the circle to which the radius belongs.
Der Radius eines Kreises definiert seinen Umfang.
The radius of a circle defines its circumference.
In this sentence, 'Kreises' is used in the genitive case to indicate belongingness to a specific group or circle within the organization.
Die Mitglieder des inneren Kreises der Organisation trafen sich gestern.
The members of the organization's inner circle met yesterday.
Here 'Kreises' appears in the genitive case to describe a group or community formed around a shared interest in music.