Learner's definition of HISTORIC
1 a [more historic; most historic] : famous or important in history
b [more historic; most historic] : having great and lasting importance
a/an historic event
c : happening or existing in the past d : considered in comparison with the past
It's wonderful to see so many people here on this historic occasion.
She returned safely from her historic flight into space.
The court made a historic decision last week.
2 : of or relating to history or the past : historical