D defs.my
Entry 1 sense Webster, 1913

Indigotic

· In·di·got·ic · IPA
01 a. Pertaining to, or derived from, indigo; as, indigotic acid, which is also called anilic or nitrosalicylic acid.
  1. 1.
    Pertaining to, or derived from, indigo; as, indigotic acid, which is also called anilic or nitrosalicylic acid.(Chem.)