When did the term origami begin to be used for recreational paper folding in Japan?

The term origami began to be used to describe recreational paper folding in Japan around 1880.1

While the word origami existed previously in the Japanese language, it was historically used to refer to folded certificates or documents of authentication. The shift in usage toward the art of paper folding is often linked to the introduction of Friedrich Froebel’s educational paper-folding methods into Japanese schools during the late 19th century. Some theories suggest the term was adopted because it was easier for schoolchildren to spell, or because it mirrored descriptive names used in other languages, such as the English "paper folding" or the German "Papierfalten".21