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   English
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invalidate [ɪn'vælɪdeɪt] v
gen. 無効化 (vn) Dictionary of Linguistics (Francis Bond) ; 無効にする Life Science Dictionary (Shuji Kaneko)
 English thesaurus
invalidate [ɪn'vælɪdeɪt] abbr.
abbr. render invalid (Val_Ships)