释义 |
phe·nan·thro·line \fə̇ˈnan(t)thrəˌlēn, -_lə̇n\ noun (-s) Etymology: International Scientific Vocabulary phenanthr- + quinoline : any of three crystalline nitrogen bases C12H8N2 related to phenanthrene and derivable from ortho-, meta-, and para-phenylenediamine; di-aza-phenanthrene; especially : the ortho or 1,10-isomer that forms a red coordination complex with ferrous ions useful as an oxidation-reduction indicator (as with potassium permanganate as oxidizing agent) because it becomes faint blue in the oxidized form |