latinism
/ˈlætɪnɪzəm/Definitions
1. noun
A phrase or expression taken from Latin and incorporated into the vocabulary of another language.
“The use of the phrase ‘carpe diem’ became a popular latinism in modern English.”
2. noun
A peculiarity or mannerism, especially one that is considered to be pretentious or old-fashioned.
“The professor’s use of latinism in his speech made him sound out of touch with the students.”