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