International auxiliary language, a language for communication between people who do not share a native language
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The auxiliary language Interglossa was devised by biologist Lancelot Hogben during World War II, as an attempt to put the international lexicon of science and technology, mainly of Greek and Latin origin, into a language with a purely isolating grammar.
International Sign (IS) is an international auxiliary language sometimes used at international meetings such as the World Federation of the Deaf (WFD) congress, events such as the Deaflympics, and informally when travelling and socialising.
Li Europan lingues is a quotation in Occidental, an international auxiliary language devised by Edgar von Wahl in
This article is an outline of the grammar of Lingua Franca Nova, a proposed international auxiliary language originally created by C. George Boeree and elaborated by the members of the LFN community.