Term in Ido; mentioned in »PROGRESO«, Oficiala organo di l’Uniono por la Linguo Internaciona, konsakrata ad la propagado, libera diskutado e konstanta perfektigado di la LINGUO INTERNACIONA, QUARESMA YARO (Paris, 1912), p.13 (LINGUALA QUESTIONI); NB¹ (translation WS): Official organ of the International Language Union, dedicated to the diffusion, free discussion and constant improvement of the IDO language [Lent issue (?)]; NB²: Ido, a derivative of Esperanto (➺ Sakŝalmo), was introduced, by the French academics Louis Couturat (1868-1914) and Léopold Leau (1868-1943), during the World exhibition in 1900 in Paris; NB³: According to Wikipedia it was created in 1907.