Chiasm \Chi"asm\ (k[imac]"[a^]z'm), Chiasma \Chi*as"ma\
(k[-i]*[a^]z"m[.a]), n. [NL. chiasma, fr. Gr. chi`asma two
lines placed crosswise, fr. ? to mark with a [chi].]
(Anat.)
A commissure; an intersection or crossing of two tracts;
especially, the optic commissure, or crucial union of the
optic nerves. -- Chi*as"mal, a..
[1913 Webster] chiasmatic
chiasmal
Source: The Collaborative International Dictionary of English v.0.48
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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..
Source: Webster's Revised Unabridged Dictionary (1913)
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