noun
Siddham script
A historical Indic script used in East Asian Buddhism, especially for writing Sanskrit mantras and seed syllables.
悉曇文字は、日本の密教寺院で今も使われている。
The Siddham script is still used in Japanese esoteric Buddhist temples.
From the Chinese transcription 悉曇 (xītán) of Sanskrit Siddham, combined with 文字 (moji, 'script').