Where does “microtunnel” come from?

microtunnel (English) comes from English Tunnel, from Old French tonel, from Old French tone, from Late Latin tunna, from Proto-Celtic tunna — hide, skin.

microtunnel (English): A microscale tunnel

Definitions

  1. A microscale tunnel

Ancestry of “microtunnel”, step by step

microtunnel traces back through two separate lines of ancestry.

via English Tunnel

StepLanguageWordMeaning
1EnglishTunnelAn underground or underwater passage
2Old Frenchtonelbarrel
3Old Frenchtonelarge barrel
4Late Latintunnatun, box
5Proto-Celtictunnahide, skin

via English micro

StepLanguageWordMeaning
1EnglishmicroSmall, relatively small; short form of...
2Ancient Greekμικρόςlittle, small
3Proto-Indo-Europeanmēy-soft, tender, dear
Every word from Proto-Celtic tunna →Every word from Late Latin tunna →Every word from Old French tone →