The paper compares several types of pluridisciplinarity research practices, referred to as multi-referentiality, inter-disciplinarity, trans-disciplinarity and meta-disciplinarity. Then it introduces co-disciplinarity, i.e., the kind of practice we are committed to in our own research teams. In particular, it describes the specific conditions under which a co-thinking space can be constructed inside a research group and the various obstacles that a co-disciplinarity work in this space could meet.