ultramicroscopic
ul.tra.mi.cro.scop.ic \-.mi--kr*-'ska:p-ik\ aj [ISV] 1: too small to be seen with an ordinary microscope 2: of or relating to an ultramicroscope
ul.tra.mi.cro.scop.ic \-.mi--kr*-'ska:p-ik\ aj [ISV] 1: too small to be seen with an ordinary microscope 2: of or relating to an ultramicroscope