Where does this definition of diffusion area come from?
This entry for diffusion area is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Does diffusion area appear elsewhere on Lughet?
Yes — diffusion area appears under other sources or language pairs in Lughet's collection. See the list below.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.