Adjective
Pertaining to chiasmus.
(by extension) Pertaining to the position of two things relative to one another.
Source: en.wiktionary.orgNote that in most older Semitic languages, the forms of the numerals from 3 to 10 exhibit gender polarity (also called "chiastic concord" or reverse agreement), i.e. if the counted noun is masculine, the numeral would be feminine and vice versa. Source: Internet
The second is a language division between the Hebrew of chapters 1 and 8–12, and the Aramaic of chapters 2–7.sfnsfn This language division is reinforced by the chiastic arrangement of the Aramaic chapters (see below). Source: Internet