In Marx’s posthumously published manuscripts from 1857–1863, we find a systematic exposition of his concept of subsumption. Though much has been written about it, significant interpretative gaps persist. In this article, I begin filling these gaps by examining the emergence of Marx’s concept of subsumption. I will argue that in the Grundrisse Marx brings together distinct but complementary elements from Hegel’s theories of judgment and teleology to coin two new and well delineated concepts of subsumption that prefigure his later concepts (...) of formal and real subsumption. These two concepts may be defined as: (a) the process of acquiring the social relational property of being a means to an end; (b) the process by which changes in non-relational properties occur in something due to this acquisition – and occur to better suit said end. (shrink)