Where does this definition of achromatic region come from?
This entry for achromatic region is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Does achromatic region appear elsewhere on Lughet?
Yes — achromatic region 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.