What is a commissure; especially, the optic commissure, or crucial union of the optic nerves. -- Chi*as"mal (, a called?
chiasma — A commissure; especially, the optic commissure, or crucial union of the optic nerves. -- Chi*as"mal (, a.. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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