significant

adj 1: important in effect or meaning; "a significant change in tax

laws"; "a significant change in the Constitution"; "a

significant contribution"; "significant details";

"statistically significant" [syn: {important}] [ant: {insignificant}]

2: fairly large; "won by a substantial margin" [syn: {substantial}]

3: (statistics) 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" [ant: {nonsignificant}]

4: rich in significance or implication; "a meaning look";

"pregnant with meaning" [syn: {meaning(a)}, {pregnant}]