[2] Proving that a word is a calque sometimes requires more documentation than does an untranslated loanword because, in some cases, a similar phrase might have arisen in both languages independently.
[14] The Latin weekday names came to be associated by ancient Germanic speakers with their own gods following a practice known as interpretatio germanica: the Latin "Day of Mercury", Mercurii dies (later mercredi in modern French), was borrowed into Late Proto-Germanic as the "Day of Wōđanaz" (Wodanesdag), which became Wōdnesdæg in Old English, then "Wednesday" in Modern English.
[15] Since at least 1894, according to the Trésor de la langue française informatisé, the French term calque has been used in its linguistic sense, namely in a publication by Louis Duvau:[16]
Un autre phénomène d'hybridation est la création dans une langue d'un mot nouveau, dérivé ou composé à l'aide d'éléments existant déja dans cette langue, et ne se distinguant en rien par l'aspect extérieur des mots plus anciens, mais qui, en fait, n'est que le calque d'un mot existant dans la langue maternelle de celui qui s'essaye à un parler nouveau.
Since at least 1926, the term calque has been attested in English through a publication by the linguist Otakar Vočadlo [cs]:[17] Notes Bibliography