Where does this definition of vacuum tube come from?
This entry for vacuum tube is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Is vacuum tube a noun, verb, or something else?
In this entry, vacuum tube is tagged as 2n..
Does vacuum tube appear elsewhere on Lughet?
Yes — vacuum tube 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.