in English is:

refrigeration

Mutations

Soft:reweiddiad
Nasal:(no mutation)
Aspirate:(no mutation)

Use

y rheweiddiad hwn
fy rheweiddiad i
dy reweiddiad di
ei reweiddiad ef/o
ei rheweiddiad hi
ein rheweiddiad ni
eich rheweiddiad chi
eu rheweiddiad nhw/hwy
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