Of or relating to the first class or rank, especially in literature or art. / Of or pertaining to established principles in a discipline.

(countable) One that is classical in some way; for example, a classical economist. / Short for classical music. / (chess) Short for classical chess.

In a classical manner; according to the manner of classical authors. / In the manner of classes; according to a regular order of classes or sets.

(uncountable) The condition of being classical / (countable, physics) The degree to which a system or phenomenon may be explained by classical mechanics

(physics) the treatment of a quantum system in terms of classical statistical mechanics

(physics) to treat a quantum system in terms of classical statistical mechanics

classicism

The quality of being classical.

plural of classicality

plural of classicalism