Home › Words › M › microtunnelmicrotunnelmicrotunnel means A microscale tunnel.Among words judged in Lexicurio's Arena, microtunnel ranks #23,631 of 42,752 for Qualifying.EtymologyFrom micro- + tunnel.nounA microscale tunnel.e.g.“To prepare the two culture compartments, which were connected by the microtunnel structures, holes were opened with a punch.” — 2016 February 6, “In Vitro Reconstruction of Neuronal Networks Derived from Human iPS Cells Using Microfabricated Devices”, in PLOS ONE, →DOI:Definitions & examples from Wiktionary (CC BY-SA 3.0).