ultrafine |
micro |
As an adjective ultrafine
is (of particles) very fine.
As a proper noun micro is
a town in north carolina.
ultrafine |
superfine |
As adjectives the difference between ultrafine and superfine
is that
ultrafine is very fine while
superfine is extremely or especially fine.
subtle |
ultrafine |
As adjectives the difference between subtle and ultrafine
is that
subtle is hard to grasp; not obvious or easily understood; barely noticeable while
ultrafine is very fine.
ultrafine |
nanopowder |
As an adjective ultrafine
is very fine.
As a noun nanopowder is
an agglomerate of ultrafine particles, nanoparticles, or nanoclusters.