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