immissĭo — Lewis & Short
immissĭo (inm-), ōnis, f.id.,
I a letting in, admission (rare but class.):
fumi aut aquae,Dig. 8, 5, 8, § 5:
sarmentorum ea aliorum amputatio, aliorum inmissio,an engrafting, Cic. de Sen. 15, 53.