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