This is a term I've developed in a piece written for the RSA's 'Ethical Futures' project. I've been working it through over the last year and it's nice to finally have a full piece that develops the concept in a more rigorous manner. In the last couple of publications, I've dropped it into the argument, but this is the full position. Essentially, the chapter talks about human enhancements as the accumulation of biocultural capital. The concept derives in part from Bourdieu's concept of cultural capital - particularly, symbolic embodied - and yet also draws on recent conversations about posthumanism. Stay tuned for the final product, but i expect the reference.