nanobot

[ nan-uh-bot ]
/ ˈnæn əˌbɒt /

noun

a machine or robot built on the nanoscale, still in the research-and-development stage, with potential applications in medicine and industry.
a machine or robot that can manipulate nanoscale objects with great precision.
Also called nan·o·ro·bot [nan-uh-roh-buh t, -bot] /ˈnæn əˌroʊ bət, -bɒt/, nanite, nanomachine.

Origin of nanobot

First recorded in 1990–95; nano- + (ro)bot