Where does this definition of PTolemaic system come from?
This entry for PTolemaic system is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Is PTolemaic system a noun, verb, or something else?
In this entry, PTolemaic system is tagged as 2n..
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.