Where does this definition of sympathetic ink come from?
This entry for sympathetic ink is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is sympathetic ink a noun, verb, or something else?
In this entry, sympathetic ink 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.
