MesoarcheanWiktionary 原文英美构词拆解Mesomeso-前缀archeanArchean词干meso-Middle or centre in location/position. · Between a macro- scale and micro- scale in scope or analysis.词源说明From meso- + Archean.释义形容词adjective1(geology) Of a geologic era within the Archaean eon from about 3200 to 2800 million years ago; stromatolites have existed from this time.专有名词proper noun1(geology) The era from 3,200 Ma to 2,800 Ma.