Noun
relexification (countable and uncountable, plural relexifications)
(linguistics) The mechanism of language change by which one language replaces much or all of its lexicon with that of another language.
Paul Wexler proposed that Esperanto was not an arbitrary pastiche of major European languages but a Latinate relexification of Yiddish, a native language of its founder. Source: Internet
Wittmann's references on the subject, besides his own work on creolization and relexification in spoken languages, include papers such as Fischer (1974, 1978), Deuchar (1987) and Judy Kegl's pre-1991 work on creolization in sign languages. Source: Internet