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