Portal:Constructed languages
Introduction

A constructed language (shortened to a conlang) is a language whose phonology, grammar, and vocabulary, instead of having developed naturally, are consciously devised for some purpose, which may include being devised for a work of fiction. A constructed language may also be referred to as an artificial, planned or invented language, or (in some cases) a fictional language. Planned languages (or engineered languages/engelangs) are languages that have been purposefully designed; they are the result of deliberate, controlling intervention and are thus of a form of language planning.
There are many possible reasons to create a constructed language, such as to ease human communication (see international auxiliary language and code); to give fiction or an associated constructed setting an added layer of realism; for experimentation in the fields of linguistics, cognitive science, and machine learning; for artistic creation; and for language games. Some people may also make constructed languages as a hobby.
The expression planned language is sometimes used to indicate international auxiliary languages and other languages designed for actual use in human communication. Some prefer it to the adjective artificial, as this term may be perceived as pejorative. Outside Esperanto culture, the term language planning means the prescriptions given to a natural language to standardize it; in this regard, even a "natural language" may be artificial in some respects, meaning some of its words have been crafted by conscious decision. Prescriptive grammars, which date to ancient times for classical languages such as Latin and Sanskrit, are rule-based codifications of natural languages, such codifications being a middle ground between naïve natural selection and development of language and its explicit construction. The term glossopoeia is also used to mean language construction, particularly construction of artistic languages.
Conlang speakers are rare. For example, the Hungarian census of 2011 found 8,397 speakers of Esperanto, and the census of 2001 found 10 of Romanid, two each of Interlingua and Ido and one each of Idiom Neutral and Mundolinco. The Russian census of 2010 found that there were in Russia about 992 speakers of Esperanto (on place 120) and nine of the Esperantido Ido. (Full article...)
Selected language
Interlingua (/ɪntərˈlɪŋɡwə/; ISO 639 language codes ia, ina) is an Italic international auxiliary language (IAL), developed between 1937 and 1951 by the International Auxiliary Language Association (IALA). It ranks among the top most widely used IALs (along with Esperanto and Ido), and is the most widely used naturalistic IAL: in other words, its vocabulary, grammar and other characteristics are derived from natural languages rather than a centrally planned grammar and vocabulary. Interlingua was developed to combine a simple, mostly regular grammar with a vocabulary common to the widest possible range of western European languages, making it unusually easy to learn, at least for those whose native languages were sources of Interlingua's vocabulary and grammar. Conversely, it is used as a rapid introduction to many natural languages. Interlingua literature maintains that (written) Interlingua is comprehensible to the hundreds of millions of people who speak Romance languages.
The name Interlingua comes from the Latin words inter, meaning between, and lingua, meaning tongue or language. These morphemes are identical in Interlingua. Thus, "Interlingua" would mean "between language". Find out more...
Did you know...
...that the Marquis Louis de Beaufront, one of the creators of Ido, was not really a marquis?
...that two different constructed languages have claimed the name Interlingua, and one the name Interlingue?
...that Gottfried Leibniz was not only a famous scientist, but also the creator of a language named Characteristica universalis?
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Some Internet resources relating to constructed languages, by Richard Kennaway
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