overclose
/ˌəʊvəˈkləʊz/verb
1 [with object] To close beyond a certain limit, angle, or alignment. Cf overclosure. Also without object rare.
2 [with object] Astronomy. Of cosmological models and physical theories, or assumptions affecting them: to cause (the modelled universe) to have a greater mass than is estimated to be contained in it in reality or that can be reconciled with its observed expansion.
Origin
Late Middle English (in an earlier sense). From over- + close.