The state or quality of being able to be diffused or dispersed.
From diffusible + -ness. This is a compound of already-complex morphology: diffuse (Latin) + -ible (Latin suffix) + -ness (Germanic suffix), showing how English combines roots from multiple language families.
This is a rare word that shows English speakers' tendency to stack suffixes—we could say 'can be diffused' but diffusibleness lets scientists describe the inherent tendency more precisely.
Complete word intelligence in one call. Free tier — 50 lookups/day.