tandem

Tandem is a term used to describe two or more things arranged one behind the other in a line, or actions that occur in coordination. In English, “in tandem” means working together or in sequence, often implying a synchronized effort or shared goal.

Origin and usage: The word derives from the Latin tandem meaning “at length” or “finally” and was borrowed into English via French. In its modern sense it denotes things arranged in a line or functioning in close cooperation.

Bicycles: The most familiar use is a tandem bicycle, a two-person bicycle with seats one behind the other. Both riders typically pedal; the front rider steers and may operate the brakes, while the rear rider contributes power.

Other uses: The phrase applies to equipment and vehicles arranged in tandem, such as tandem axles on trailers or machines designed to operate in sequence. In engineering and logistics, tandem arrangements are used to enhance efficiency or payload.

Biology and language: In genetics, tandem repeats are short DNA sequences repeated directly adjacent to each other. In everyday language, “in tandem” describes two processes or teams working together.