Language contact in the context of "Altaic languages"

In linguistics, a stratum (Latin for 'layer') or strate is a historical layer of language that influences or is influenced by another language through contact. The notion of "strata" was first developed by the Italian linguist Graziadio Isaia Ascoli, and became known in the English-speaking world through the work of two different authors in 1932.

Both concepts apply to a situation where an intrusive language establishes itself in the territory of another, typically as the result of migration. Whether the superstratum case (the local language persists and the intrusive language disappears) or the substratum one (the local language disappears and the intrusive language persists) applies will normally only be evident after several generations, during which the intrusive language exists within a diaspora culture.

The Parthian language, also known as Arsacid Pahlavi and Pahlawānīg, is an extinct ancient Northwestern Iranian language once spoken in Parthia, a region situated in present-day northeastern Iran and Turkmenistan. Parthian was the language of state of the Arsacid Parthian Empire (248 BC – 224 AD), as well as of its eponymous branches of the Arsacid dynasty of Armenia, Arsacid dynasty of Iberia, and the Arsacid dynasty of Caucasian Albania.

Parthian had a significant impact on Armenian, a large part of whose vocabulary was formed primarily from borrowings from Parthian, and had a derivational morphology and syntax that was also affected by language contact but to a lesser extent. Many ancient Parthian words were preserved and now survive only in Armenian. The Semnani or Komisenian languages and Zaza language have similarities with Parthian language and they may descend from Parthian directly or Northwestern Iranian languages with Parthian influences, but the topic lacks sufficient research.

Dialect levelling (or leveling in American English) is an overall reduction in the variation or diversity of a dialect's features when in contact with one or more other dialects. This can come about through assimilation, mixture, and merging of certain dialects, often amidst a process of language codification, which can be a precursor to standardization. One possible result is a koine language, in which various dialects mix together and simplify, settling into a new and more widely embraced form of the language. Another possible path is that a speech community increasingly adopts or exclusively preserves features with widespread social currency at the expense of their more local or traditional dialect features.

Dialect levelling has been observed in most languages with large numbers of speakers after industrialization and modernization of the areas in which they are spoken. However, while less common, it could be observed in pre-industrial times too, especially in colonial dialects like American and Australian English or when sustained linguistic contact between different dialects over a large geographical area continues for long enough as in the Hellenistic world that produced Koine Greek as a result of dialect leveling from Ancient Greek dialects.

A pidgin /ˈpɪdʒɪn/, or pidgin language, is a grammatically simplified form of contact language that develops between two or more groups of people that do not have a language in common: typically, its vocabulary and grammar are limited and often drawn from several languages. It is most commonly employed in situations such as trade, or where both groups speak languages different from the language of the country in which they reside (but where there is no common language between the groups).

Fundamentally, a pidgin is a simplified means of linguistic communication, as it is constructed impromptu, or by convention, between individuals or groups of people. A pidgin is not the native language of any speech community, but is instead learned as a second language.

The Indigenous languages of the Americas are the languages that were used by the Indigenous peoples of the Americas before the arrival of Europeans. Over a thousand of these languages are still used today, while many more are now extinct. The Indigenous languages of the Americas are not all related to each other; instead, they are classified into a hundred or so language families and isolates, as well as several extinct languages that are unclassified due to the lack of information on them.

Many proposals have been made to relate some or all of these languages to each other, with varying degrees of success. The most widely reported is Joseph Greenberg's Amerind hypothesis, which, however, nearly all specialists reject because of severe methodological flaws; spurious data; and a failure to distinguish cognation, contact, and coincidence.

American Sign Language (ASL) is a natural language that serves as the predominant sign language of Deaf communities in the United States and most of Anglophone Canada. ASL is a complete and organized visual language that is expressed by employing both manual and nonmanual features. Besides North America, dialects of ASL and ASL-based creoles are used in many countries around the world, including much of West Africa and parts of Southeast Asia. ASL is also widely learned as a second language, serving as a lingua franca. ASL is most closely related to French Sign Language (LSF). It has been proposed that ASL is a creole language of LSF, although ASL shows features atypical of creole languages, such as agglutinative morphology.

ASL originated in the early 19th century in the American School for the Deaf (ASD) in Hartford, Connecticut, from a situation of language contact. Since then, ASL use has been propagated widely by schools for the deaf and deaf community organizations. Despite its wide use, no accurate count of ASL users has been taken. Reliable estimates for American ASL users range from 250,000 to 500,000 persons, including a number of children of deaf adults (CODA) and other hearing individuals.

In linguistics, borrowing is a type of language change in which a language or dialect undergoes change as a result of contact with another language or dialect. In typical cases of borrowing, speakers of one language (the "recipient" language) adopt into their own speech a novel linguistic feature that they were exposed to due to its presence in a different language (the "source" or "donor" language).