Home › Words › M › mountdownmountdownmountdown · noun — the act of mounting an electrical component onto a surface.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom mount + down.nounThe act of mounting an electrical component onto a surface.e.g.“Figure 4 shows a typical detail of a single chip mountdown to a module base plate.” — 1975, International Solid-State Power Electronics Conference, Proceedings of POWERCON, volumes 1-2, page 46:Definitions & examples from Wiktionary (CC BY-SA 3.0).