CRUCIAL

crucial. Crucial, a. transverse, running across, crossed

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Cru″cial (kr?″shal), a. [[F. crucial, fr. L. crux, crucis, cross, torture. See Cross.]] 1. 1. Having the form of a cross; appertaining to a cross; cruciform; intersecting; as, crucial ligaments; a crucial incision.
2. 2. Severe; trying or searching, as if bringing to the cross; decisive; as, a crucial test.