Great died in 323 BC, he left a huge empire. The guys who
took over after Alex was gone are also called the diadochi.
Diadochus is singular, diadochi plural.
Originally Greek, the word means successor. Some people also
spell it diodochoi or diadochoi. Take your pick.
The main Diadochi were
Ptolemy I (Egypt)
Antigonus was removed from the list by
means of the
of Ipsus in 301.
And here is the map
Click to enlarge