Abstract
A new mechanism for generating an ultralight Dirac neutrino is given. A discussion is given of how it might possibly arise in a supergrand unified theory (SUSY GUT) with a geometric type of a hierarchy. The neutrino is scaled in mass relative to its charge-$\frac{2}{3}$ family member by $\frac{{M}_{\mathrm{SUSY}}}{{M}_{\mathrm{GUT}}}$.
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