placing crosswise, diagonal arrangement, esp. of the clauses of a period, so that the 1st corresponds with the 4th, and the 2nd with the 3rd, Hermog. Inv. 4.3; κατὰ χιασμόν Sch. Isoc. 12.47.
cruciform incision, Antyll. ap. Orib. 44.20.32 (-εσμός codd., and so of a noose, Heraclas ap. eund. 48.9.2; of a bandage, Heliod. ap. eund. 48.65 tit.).
decussation, σκιῶν Cleom. 1.9, cf. Nicom. Ar. 1.19 (pl.); of nerves, Aret. SD 1.7.
cancellation of a document, PMasp. 151.292 (vi A. D.).