English
diffusional
From diffusion + -al.
A compound of diffusion + -al
Proto-Indo-European *ǵʰewd- ‘to pour’
…
Proto-Italic *hundō ‘to pour out’
Latin fundō ‘to pour out, shed’
Latin diffundō ‘to diffuse, scatter’
Latin diffūsiō ‘spreading out, increase in extent or breadth’
English diffusion
Today it means
adj Of or pertaining to diffusion.
Language periods are conventional ranges, not dates for this word.
Etymograph / diffusional