Definitions

1. verb

to cross or intersect at an angle, typically in a regular or symmetrical pattern

“The veins decussate on the leaf, forming a network of veins.”

2. adjective

intersecting or crossing at an angle, typically in a regular or symmetrical pattern

“The decussate leaves of the plant are arranged in a unique pattern.”

3. noun

a pattern of leaves or other organs that intersect or cross at an angle

“The decussation of the leaves is a characteristic feature of this plant species.”