Zsigmondy (Moon)

Named after Richard Adolf Zsigmondy - Austrian chemist; Nobel laureate (1865-1929).

Zsigmondy is a lunar crater located beyond the northwestern limb on the far side. Attached to the southeastern rim of the crater is the crater Omar Khayyam, which lies within the much larger Poczobutt. Farther to the east, along the north rim of Poczobutt, is Smoluchowski. The rim is eroded and distorted in form, having a somewhat polygonal outline. (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.