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