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