1. Having the form of a cross; appertaining to a cross; cruciform; intersecting; as, crucial ligaments; a crucial incision.
2. Severe; trying or searching, as if bringing to the cross; decisive; as, a crucial test.
adj 1: of extreme importance; vital to the resolution of a crisis;
"a crucial moment in his career"; "a crucial
election"; "a crucial issue for women" [syn: important]
2: having crucial relevance; "crucial to the case"; "relevant
testimony" [syn: relevant]
3: of the greatest importance; "the all-important subject of
disarmament"; "crucial information"; "in chess cool nerves
are of the essence" [syn: all-important(a), all
important(p), essential, of the essence(p)]
4: having the power or quality of deciding; "the crucial
experiment"; "cast the deciding vote"; "the determinative
(or determinant) battle" [syn: deciding(a), determinant,