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persistency [pə'sɪstənsɪ] n
gen. ثابت قدمی ضد   ؛اصرار
 English thesaurus
persistency [pə'sɪstənsɪ] n
mil., logist. Notion pertaining to the efficiency duration. Refers to the length of time during which a chemical or biological agent remains effective in the target area after its dispersal. (FRA)