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daughter language - Wiktionary, the free dictionary

From Wiktionary, the free dictionary

Probably a calque of German Tochtersprache.

daughter language (plural daughter languages)

  1. (linguistics) A language which genetically descends from an earlier parent language.
    Synonym: daughter
    Coordinate terms: parent language, sister language
    English is a daughter language of Old English.
    French, Spanish, Italian and Portuguese are daughter languages of Latin.