phthaleinWiktionary 原文构词拆分phthalic词根/词干+-ein后缀(chemistry) Used in a compound distinguished from a compound with a name ending in -in or -ine.词源说明By surface analysis, phthal(ic) + -ein.释义（英文）名词 Noun(organic chemistry) Any of a range of lactones formed by the reaction of phenols with phthalic anhydride.词族派生词（5）cresolphthaleinresorcinolphthaleinsulfonephthaleinphenol phthaleinphenolphthalein相关词（2）phthalic acidphenolphthalin