Longman Dictionary of Contemporary English - significantly

~ adv 1 in an important way or to an important degree  (Health problems can be significantly reduced by careful diet.) + from  (Methods used by younger teachers differ significantly from those used by older ones. | significantly better/greater/worse etc)  (Delia's work has been significantly better since her training course. | Significantly, no newspaper has dared to print this shocking story.) 2 in a way that seems to have a special meaning  (Tom nodded significantly at the suggestion, but did not comment.)