"Previx ante" is likely a misspelling of "prefix ante." "Prefix ante" could refer to a term or concept that is set before or in front of another term or concept, usually to modify its meaning.
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d (anted).
Words that use ante- as a prefix include antediluvian (before
the flood) and antebellum(before the war).
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One prefix that means before is "pre" as in the word
pretest.