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