classicism

From classic +‎ -ism.

classicism (countable and uncountable, plural classicisms)

1. (uncountable) All the classical traditions of the art and architecture of ancient Greece and Rome, especially the aspects of simplicity, elegance and proportion.
   • 2008 June 9, Alastair Macaulay, “In Student Steps and Leaps, a Survey of National Styles”, in The New York Times‎^[1]:

     It catches an American athleticism and energetic team spirit that still seem to smash European notions of ballet classicism, as does its dancers’ selfless manner and their practicelike costumes.

2. (uncountable) Classical scholarship.
3. (countable) A Latin or Ancient Greek expression used in an English sentence.