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