D defs.my
Entry 1 sense Webster, 1913

Phenanthroline

· Phe·nan·thro·line · IPA
01 n. Either of two metameric nitrogenous hydrocarbon bases, C12H8N2, analogous to phenanthridine, but more highly nitrogenized.
  1. 1.
    Either of two metameric nitrogenous hydrocarbon bases, C12H8N2, analogous to phenanthridine, but more highly nitrogenized.(Chem.)