0-9  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z keiretsu Japanese term for a group of corporations tied together by interlocking directorates and mutual shareholding. In keiretsu, the obligation to extend mutual aid and to keep as much business as possible within the group is taken for granted. kilo (K) A prefix for one thousand (1000) times a specific unit. kilobits per second (Kbps) One thousand bits per second. A measure of transmission speed.