Angerthas, in Sindarin meant 'long Rune-rows'.

It was the name used for the written Runes (Cirth), of which the two most popular forms were the Angerthas Daeron, which represented the Sindarin language of the Elves, and the Angerthas Moria, which represented the form used most often by the Dwarves.
Encyclopedia entry originally written by sairina_star