Lingo is defined as the special vocabulary of a specific field.(noun)
An example of lingo is the set of terms that scientists use when speaking to one another.
See lingo in Webster's New World College Dictionary
noun pl. lingoes
Origin: Prov lingo, lengo < L lingua, tongue: see language
See lingo in American Heritage Dictionary 4
noun pl. lin·goes
Origin: Probably from Portuguese lingoa
Origin: , from Latin lingua, language; see dṇghū- in Indo-European roots. Word History: A look at the entry in the Indo-European roots entry for *dṇghū- will show that the words tongue, language, and lingo are related, all going back to the Indo-European root *dṇghū-, “tongue.” The relationship between language and lingo is not particularly surprising given their related meanings and common root, but one might be curious about the routes by which these two words came into English. Language, as did so many of our important borrowings from Latin, passed through French into English during the Middle Ages, the forms involved being Latin lingua, “language,” its descendant, Old French langue, and its derivative, langage. Lingo, on the other hand, entered English after the end of the Middle Ages when Europe had opened itself to the larger world. We have probably borrowed lingo from lingoa, a Portuguese descendant of Latin lingua. The Portuguese were great traders before the English were, and the sense “foreign language” was likely strengthened as the Portuguese traveled around the world. Interestingly enough, the first recorded instance of lingo in English is in the New World (1660) in a reference to the “Dutch lingo.” The development in sense to “unintelligible language” and “specialized language” is an obvious one.
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