Short for "International Auxiliary Language". a language created by a person or a group with the purpose of facilitating international communication. Typically, auxlangs are simple, regular and try to be culturally neutral. Well-known examples include Esperanto, Interlingua and Volapük.
People often measure the success of conlangs by their number of speakers, but that criterion works only for auxlangs, really.
by d'Acier September 06, 2011