noun
an intersection or crossing of two tracts in the form of the letter X
• Syn: ↑chiasma, ↑decussation
• Derivationally related forms: ↑decussate (for: ↑decussation), ↑chiasmal, ↑chiasmic, ↑chiasmatic
• Hypernyms: ↑structure, ↑anatomical structure, ↑complex body part, ↑bodily structure, ↑body structure
• Hyponyms: ↑optic chiasma, ↑optic chiasm, ↑chiasma opticum
Useful english dictionary. 2012.