chiasm

Từ điển WordNet v3.1 - WordNet Dictionary

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