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