in English is:

sedimentation

Mutations

Soft:waddodiad
Nasal:ngwaddodiad
Aspirate:(no mutation)

Use

y gwaddodiad hwn
fy ngwaddodiad i
dy waddodiad di
ei waddodiad ef/o
ei gwaddodiad hi
ein gwaddodiad ni
eich gwaddodiad chi
eu gwaddodiad nhw/hwy
External

Dictionary Portal

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

Specialist Dictionaries
Glossaries
Terminology
Encyclopedia
Example Sentences
Sentences containing:

*External websites will be opened in a new window.