For a topical guide of this subject, see Outline of linguistics

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Linguistics is the scientific study of language. The areas of linguistic analysis are syntax (rules governing the structure of sentences), semantics (meaning), morphology (structure of words), phonetics (speech sounds and equivalent gestures in sign languages), phonology (the abstract sound system of a particular language, and analogous systems of sign languages), and pragmatics (how the context of use contributes to meaning). Subdisciplines such as biolinguistics (the study of the biological variables and evolution of language) and psycholinguistics (the study of psychological factors in human language) bridge many of these divisions.

Linguistics encompasses many branches and subfields that span both theoretical and practical applications. Theoretical linguistics is concerned with understanding the universal and fundamental nature of language and developing a general theoretical framework for describing it. Applied linguistics seeks to utilize the scientific findings of the study of language for practical purposes, such as developing methods of improving language education and literacy.

Linguistic features may be studied through a variety of perspectives: synchronically (by describing the structure of a language at a specific point in time) or diachronically (through the historical development of a language over a period of time), in monolinguals or in multilinguals, among children or among adults, in terms of how it is being learnt or how it was acquired, as abstract objects or as cognitive structures, through written texts or through oral elicitation, and finally through mechanical data collection or practical fieldwork.

Linguistics emerged from the field of philology, of which some branches are more qualitative and holistic in approach. Today, philology and linguistics are variably described as related fields, subdisciplines, or separate fields of language study but, by and large, linguistics can be seen as an umbrella term. Linguistics is also related to the philosophy of language, stylistics, rhetoric, semiotics, lexicography, and translation. (Full article...)

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Nahuatl is a group of related languages and dialects of the Aztecan, or Nahuan, branch of the Uto-Aztecan language family, all of which are indigenous to Mesoamerica and are spoken by an estimated 1.5 million Nahua people, mostly in Central Mexico. Nahuatl has been spoken in Central Mexico since at least the 7th century AD. At the time of the Spanish conquest of Mexico in the early 16th century it was the language of the Aztecs, who dominated central Mexico during the Late Postclassic period of Mesoamerican chronology. The expansion and influence of the Aztec Empire led to the dialect spoken by the Aztecs of Tenochtitlan becoming a prestige language in Mesoamerica in this period. With the introduction of the Latin alphabet, Nahuatl also became a literary language and many chronicles, grammars, works of poetry, administrative documents and codices were written in the 16th and 17th centuries. This early literary language based on the Tenochtitlan dialect has been labeled Classical Nahuatl and is among the most-studied and best-documented languages of the Americas. Today, Nahuan dialects are spoken in scattered communities mostly in rural areas. There are considerable differences between dialects and some are mutually unintelligible. No modern dialects are identical to Classical Nahuatl, but those spoken in and around the Valley of Mexico are generally more closely related to it than those on the periphery. (more...)

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From Wikipedia's "Did You Know" archives:

The number 605 in Khmer Numerals

... that the world's largest mathematical experiment, designed by Brian Butterworth, found women to be faster than men at subitizing?
... that Khmer numerals were the first material evidence of the figure zero as a numerical figure?
... that in the English plural, the letter -s is pronounced differently in words like "cats", "cabs", and "buses", because of a phonological rule?
...that the 2005 movie The Interpreter by film director Sydney Pollack was based on real-life conference interpreters from the United Nations Interpretation Service?
... that Samuel Taylor Coleridge spelled William Shakespeare's last name as "Shakspere"?