In a manner relating to or involving decussation; in a way that produces X-shaped crossing patterns.
From decussative (adjective form meaning having the quality of decussating) with the -ly adverb suffix, creating an adverbial form for describing decussation-related actions.
Rarely used in modern English, but decussatively-arranged structures appear throughout nature—from plant stems to animal tissue—showing that X-patterns are nature's solution!
Complete word intelligence in one call. Free tier — 50 lookups/day.