zend-avestichttp://www.oed.com/dictionary/zend-avestic_adj%3Ftab%3Dmeaning_and_useZend-Avestic, adj.
First published 2018

Zend-Avesticadjective

rare.
  1. 1864–
    Of or relating to the Zend-Avesta, or the ancient Iranian language in which the Avesta is written.
    Stressed as Zend-Aˈvestic.
    1. 1864
      Two of the greatest European authorities in Zend-Avestic literature.
      J. M. Fuller, Ess. on Authenticity of Book of Daniel v. 186
    2. 1913
      The invaluable services he [sc. L. H. Mills] has rendered..to Zend-Avestic research.
      L. Mills, Our Own Relig. in Ancient Persia x. 148
    3. 1985
      Respecting the Roman cult of Mithra, it is a common-place blunder, to attribute this to the Zend-Avestic culture.
      Executive Intelligence Review 4 June 38/1

Originally published as part of the entry for Zend-Avesta, n.

Zend-Avestic, adj. was first published in 2018.