ultrasmall

adj

1. (not-comparable)Extremely or exceedingly small.

   “In the hip science of ultrasmall nanotechnology, fantastical future possibilities like rampaging nanorobots capture the most attention, but the first fruits of the field have been more mundane: tiny bits of mostly ordinary stuff that just sit there.”

   “Magnetic resonance force microscopy employs an ultrasmall cantilever arm as a platform for specimens that are then moved in and out of proximity to a tiny magnet.”