heptakis-Wiktionary 原文英美词源链古希腊语Ancient Greek约前 1500–前 300 年ἑπτάκις‘seven times’↓ 派生英语Englishheptakis-词源说明From Ancient Greek ἑπτάκις (heptákis, “seven times”).释义前缀prefix1(mathematics) A variant of hepta-, used for multiplication with a second numerical prefix.2(chemistry) A variant of hepta-, used for substitutions of seven complex rather than simple units.同族词相关词 6bis-·tris-·tetrakis-