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