Sentence:  Both of these approaches began by challenging Lévi-Strauss's central conception of the relation of nature and culture, and of its role as the frame of his vision of anthropology as “<WSD>entropology</WSD>”, the reduction of culture to the status of an epiphenomenon of nature. 
Meaning of the word marked with <WSD> tags:  The study of human actions that lead to the disintegration and increasing disorder of highly evolved social systems.