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   English ⇄
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invalidate [ɪn'vælɪdeɪt] v
gen. érvénytelenné tesz
patents. megcáfol; hatálytalanít; érvénytelenít
 English thesaurus
invalidate [ɪn'vælɪdeɪt] abbr.
abbr. render invalid (Val_Ships)

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