his‧tor‧ic [usually before noun]
a historic place or building is very old:
the restoration of historic buildings
ancient historic sites
our historic monuments
a historic event or act is very important and will be recorded as part of history:
a historic meeting of world leaders
'It is a historic moment,' he told journalists.
having taken place or existed in the past:
It's unlikely that the share price will exceed historic levels.
historic times are the periods of time whose history has been recorded [↪ prehistoric]:
Extinct volcanoes are those that have not erupted in historic times.