Where does this definition of ئۇسسۇل قەدىمى come from?
This entry for ئۇسسۇل قەدىمى is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
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.