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Douglas Harper's Etymology Dictionary
chiastic

1856, from Latinized form of Greek khiastos "arranged diagonally; marked with an X" (i.e., resembling the Greek letter chi) + -ic.

Wiktionary
chiastic

a. Pertaining to chiasmus.

Usage examples of "chiastic".

The chiastic structure of the sequences and genders amused me, but after a moment another thought occurred to me, clouding my spirits, and I brought it up to her only half in jest.