'Geissler tube' definitions:

Definition of 'Geissler tube'

From: GCIDE

Geissler tube \Geis"sler tube`\ (Elec.) A glass tube provided with platinum electrodes, and containing some gas under very low tension, which becomes luminous when an electrical discharge is passed through it; -- so called from the name of a noted maker in germany. It is called also {Pl["u]cker tube}, from the German physicist who devised it. [1913 Webster]