Simple past tense and past participle of quadruplicate.(verb)
Replicated four times(adjective)
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Use "quadruplicated" in a sentence
"Any dream that could get at you through the circumvallation of glass, brocade, cotton and feathers could be no better than a quadruplicated house-breaker, compounded out of desperate villainies."
"These orders might be written in anything from fifteen to fifty minutes according to the movement required, and then had to be quadruplicated and sent out to the battalions by their respective orderlies, or by wire."