We found 9 dictionaries that define the word diffusional:

General (5 matching dictionaries)

1. diffusional: Merriam-Webster
2. diffusional: Collins English Dictionary
3. diffusional: Wiktionary
4. diffusional: Dictionary.com
5. diffusional: TheFreeDictionary.com

Business (1 matching dictionary)

6. diffusional: Legal dictionary

Computing (1 matching dictionary)

7. diffusional: Encyclopedia

Medicine (2 matching dictionaries)

8. diffusional: Merriam-Webster Medical Dictionary
9. diffusional: Medical dictionary

(Note: See diffusion as well.)

Definitions from Wiktionary (diffusional) ▸ adjective:  Of or pertaining to diffusion. Similar: diffusive, diffusionist, diffusionistic, subdiffusive, diffusiophoretic, subdiffusional, superdiffusive, biodiffusive, disseminational, diffractional, more... Opposite: concentrated, localized, focused, centralized ▸ Words similar to diffusional ▸ Usage examples for diffusional ▸ Idioms related to diffusional ▸ Wikipedia articles (New!) ▸ Popular nouns described by diffusional ▸ Words that often appear near diffusional ▸ Rhymes of diffusional ▸ Invented words related to diffusional