Named after Pieter Zeeman - Dutch physicist; Nobel laureate (1865-1943).
Zeeman is a lunar impact crater located on the far side near its south pole. It is not directly visible from the Earth. To the northwest lies the crater Numerov. Southeast of the rim is the crater Ashbrook. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.