chi·asm /ˈkaɪˌæzṃ, ˈki-/
chi·asm /ˈkaɪˌæzəm, ˈkɪ-/ 名詞
交叉
Chi·asm Chi·as·ma n. 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..
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chiasm
n : an intersection or crossing of two tracts in the form of the
letter X [syn: chiasma, decussation]