Home › Words › L › lacmoidlacmoidlacmoid means A purplish dye made from resorcinol, employed as an indicator, being turned blue by alkalis and red by acids.EtymologyOriginally a trade name.nounA purplish dye made from resorcinol, employed as an indicator, being turned blue by alkalis and red by acids.Definitions & examples from Wiktionary (CC BY-SA 3.0).