• (a.) Like ink; suitable for making ink. Sulphate of iron (copperas, green vitriol) is called atramentarious, as being used in making ink.
At`ra·men·ta'ri·ous adjective [ Confer French atramentaire . See Atramentaceous .] Like ink; suitable for making ink. Sulphate of iron (copperas, green vitriol) is called atramentarious , as being used in making ink.