Home › Words › H › holophaneholophaneholophane · noun — A kind of light fixture having a borosilicate glass reflector/refractor.Definition from Wiktionary (CC BY-SA 3.0).EtymologyBrand name, presumably holo- + -phane.nounA kind of light fixture having a borosilicate glass reflector/refractor.Definitions & examples from Wiktionary (CC BY-SA 3.0).