What does "decussation" mean?

A crossing or intersection of lines etc. so as to form an X-shape.

What is a synonym for "decussation"?

Common synonyms include: chiasm, chiasma, chiasma, cross section, intersection, mesh.

Pronounced //dɛkʌˈseɪʃən//.

//dɛkʌˈseɪʃən// noun

noun ·Rare ·Advanced level

Noun

1
A crossing or intersection of lines etc. so as to form an X-shape.
"[…] which being doubled at the angle, makes up the Letter χ, that is the Emphaticall decussation, or fundamentall figure."
2
an intersection or crossing of two tracts in the form of the letter X wordnet

"[…] which being doubled at the angle, makes up the Letter χ, that is the Emphaticall decussation, or fundamentall figure."

From Latin decussationem, from decussare.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.