the script in which the ancient Persian language of the Avesta is writtenadj.of or pertaining to the Avesta (sacred text of Zoroastrianism)
英汉双解大词典
Avestan/əˈvɛstɪk/(alsoAvestic)
1.
N（名词）
the oldest recorded language of the Iranian branch of the Indo-European family; the language of the Avesta 阿维斯陀语; 一种印欧语系家族的伊朗族分支所用的最古老的已记录语言 (Formerly called Zend)
2.
ADJ（形容词）
of or relating to the Avesta or its language 阿维斯陀的; 阿维斯陀语的