microcontinentWiktionary 原文构词拆分micro-前缀(diminutive) Very small. · (metric units) One millionth.+continent词根/词干词源说明From micro- + continent.释义（英文）名词 Noun(geography) A fragment of continental crust that has cleaved off its parent tectonic plate.词族派生词（1）paleomicrocontinent