definition of
significant

[1] #1 significant a. [important] important in effect or meaning; "a significant change in tax laws"; "a significant change in the Constitution"; "a significant contribution"; "significant details"; "statistically significant". wn

[2] #2 significant s. [substantial] fairly large; "won by a substantial margin". wn

[3] #3 significant a. too closely correlated to be attributed to chance and therefore indicating a systematic relation; "the interaction effect is significant at the .01 level"; "no significant difference was found". wn