the economic and political theories of Karl Marx and Friedrich Engels that hold that human actions and institutions are economically determined and that class struggle is needed to create historical change and that capitalism will ultimately be superseded by communism
(chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles; "the ancient Greek philosophers Democritus and Epicurus held atomic theories of the universe"
(psychology) a theory that reduces all mental phenomena to simple elements (sensations and feelings) that form complex ideas by association
southeastern European plant cultivated for its fragrant purplish flowers and round flat papery silver-white seedpods that are used for indoor decoration
the creation of beautiful or significant things; "art does not need to be innovative to be good"; "I was never any good at art"; "he said that architecture is the art of wasting space beautifully"
the products of human creativity; works of art collectively; "an art exhibition"; "a fine collection of art"
a superior skill that you can learn by study and practice and observation; "the art of conversation"; "it's quite an art"
the quality of being consistent with or based on logic
the state of having good sense and sound judgment; "his rationality may have been impaired"; "he had to rely less on reason than on rousing their emotions"