cyclopentasilaneWiktionary 原文构词拆分cyclo-前缀Circle, circular. · (chemistry) A cyclic compound.+penta-前缀Five.+silane词根/词干词源说明From cyclo- + penta- + silane.释义（英文）名词 Noun(inorganic chemistry) The cyclic silane Si5H10, the silicon analogue of cyclopentane