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