Where does this definition of polar front come from?
This entry for polar front is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is polar front a noun, verb, or something else?
In this entry, polar front is tagged as 2n..
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.