Definition of "in tandem" []

• One behind the other. (adverb)
• Together. (adverb)

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• "“What is ‘greasy’?” asked Taffy Edmunds, delegated to look after the quarterdeck sheep in tandem with Bill Whiting—a choice which had provoked considerable mirth in the prison but did not displease the shepherds, both farm boys far too canny to admit that they were farm boys."
• "Their arguments and their evidence were contained in the draft known as “the report,” meant to be issued through PIO as soon as possible, in tandem with the case being officially closed by the Bureau, and the police agencies involved would certainly, even eagerly, follow suit."
• "Two protoplanets—the Earth and the Moon—now separate gaseous eddies mutually trapped in their gravitational pull, moving in tandem orbit around the Sun and growing more dense."