The story
- Proto-Indo-European*(s)neh₁-
- Proto-Indo-European*snéh₁wr̥
- Ancient Greekνεῦρον (neûron)
- Ancient Greekνευρο- (neuro-)
- English todayneuro-
From Ancient Greek νευρο- (neuro-), combining form of νεῦρον (neûron, “sinew, tendon, cord”). By surface analysis, neur- + -o-.
Etymology from Wiktionary, CC BY-SA 4.0.