metronWiktionary 原文英美词源链原始词根原始印欧语Proto-Indo-European约前 4500–前 2500 年*meh₁-古希腊语Ancient Greek约前 1500–前 300 年μέτρον↓ 派生英语Englishmetron词源说明From Ancient Greek μέτρον (métron). Doublet of meter, metre, and mether.释义名词noun1metre (US: meter), poetic measure2by extensionsphere of influence3(physics) A two-dimensional quantum of multidimensional space, a unit of measure in Heim theory