1. A crossing of two portions of the optic nerve, so called from its resemblance to the junction of lines in the Greek letter x.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• chaism,
• chyasm,
• chism,
• chiam,
• chiaan,
• xhiasm,
• vhiasm,
• fhiasm,
• chiasam,
• chisam,
• chyasma,
• chiasme,
• chioss,
• cholasma,
• shvaism,
• Sybiasm,
• hIASA,
• chaasa,
• criast,
• phaeysm

• chism,
• chacon,
• chasm,
• chiasma,
• chaisson,
• chason,
• chiasson,
• chacma.

The adjective form of the word "chiasm" is "chiastic".

The plural of the "chiasm" can be the "chiasms".

The singular of the "chiasm" can be the "chiasm".