Longman Dictionary of Contemporary English homepage

revolutionary

1 adjective
     
Related topics: Groupings, Society
rev‧o‧lu‧tion‧a‧ry1
1 completely new and different, especially in a way that leads to great improvements:
The new cancer drug is a revolutionary breakthrough.
2 [only before noun]PPGS relating to a political or social revolution:
a revolutionary leader

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