punctus interrogativus
/ˌpʌŋ(k)təs ɪntəˌrɒɡəˈtiːvəs/ /ˌpʌŋ(k)təs ɪntəˌrɒɡəˈtʌɪvəs/Palaeography
noun
In medieval manuscripts: a punctuation mark consisting of a punctus with a symbol somewhat resembling a tilde above it, used at the end of a question.
Origin
1950s. From post-classical Latin punctus interrogativus from classical Latin punctus + post-classical Latin interrogativus interrogative. Compare German Punctus interrogativus.