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