significant (
http://definr.com/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]