cru·ci·form I. \ˈkrüsəˌfȯrm\adjective Etymology: Latin cruci-, crux cross + English -form — more at ridge : forming or arranged in a cross : cruciate < a cruciform aircraft wing > • cru·ci·form·lyadverb II. noun (-s) : a figure representing or resembling a cross : cross < the ground plan is a cruciform >