What is "ultrafine"

Usage examples of "ultrafine".

From the way her hand moved, Marlowe guessed that the buckle was attached to something that was too fine for him to see, probably a length of ultrafine steel wire concealed inside the beltloopwire.

That was a nose jutting between gaunt and sunken cheeks above a mouth, and there was a chin naked only because once an ultrafine laser had burned out the thousand and one roots of the beard that grew on it.

Fishermen busied themselves weaving more of those ultrafine nets that were used to catch the very smallest fish.

A microchip was wired into five of the ultrafine filaments that skewered his brain, and tucked up into a fissure in his skull.