  Depolarization dyadics play a central role in theoretical studies involving
scattering from small particles and homogenization of particulate composite
materials. Closed-form expressions for depolarization dyadics have been
developed for truncated spheres and truncated spheroids, and the formalism has
been extended to truncated ellipsoids; the evaluation of depolarization dyadics
for this latter case requires numerical integration. The H\"{o}lder continuity
condition has been exploited to fix the origin of the coordinate system for the
evaluation of depolarization dyadics.These results will enable theoretical
studies involving scattering from small particles and homogenization of
particulate composite materials to accommodate particles with a much wider
range of shapes than was the case hitherto.
