Adjacent Words

chiasm definitions

	Tweet

WordNet (r) 3.0 (2005)

n
1: an intersection or crossing of two tracts in the form of the letter X [syn: chiasma, chiasm, decussation]

Merriam Webster's

noun Etymology: New Latin chiasma Date: 1870 chiasma 1

Webster's 1913 Dictionary

Chiasm Chi"asm, Chiasma Chi*as"ma, n. [NL. chiasma, fr. Gr. ? two lines placed crosswise, fr. ? to mark with a [chi].] (Anat.) A commissure; especially, the optic commissure, or crucial union of the optic nerves. -- Chi*as"mal, a..