in English is:

desertification

Mutations

Soft:ddiffeithdiro
Nasal:niffeithdiro
Aspirate:(no mutation)

Use

y diffeithdiro hwn
fy niffeithdiro i
dy ddiffeithdiro di
ei ddiffeithdiro ef/o
ei diffeithdiro hi
ein diffeithdiro ni
eich diffeithdiro chi
eu diffeithdiro nhw/hwy
External

Dictionary Portal

This is a library of dictionaries and other online resources where you can search further for diffeithdiro*:

Specialist Dictionaries
Glossaries
Terminology
Encyclopedia
Example Sentences
Sentences containing:

*External websites will be opened in a new window.