Definition of "piggybacked" []

• Simple past tense and past participle of piggyback. (verb)

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• "Notably, the company checked the Trujillos 'time sheets against the security gate log of entries and exits, ignoring the fact that workers often "piggybacked" -- failed to show their badges at the gate, following after someone who had -- and had done so for years without comment by the company."
• "This treatment uses a radiation-emitting isotope "piggybacked" onto an antibody that binds to melanin."
• "In the past, Pelham officials have "piggybacked" Shelby County's contract with Waste"