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