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tandem

American  
[tan-duhm] / ˈtæn dəm /

adverb

  1. one following or behind the other.

    to drive horses tandem.


adjective

  1. having animals, seats, parts, etc., arranged tandem or one behind another.

noun

  • tandems
    plural
  1. a vehicle, as a truck, tractor, or trailer, in which a pair or pairs of axles are arranged in tandem.

  2. tandem bicycle.

  3. tandem trailer.

  4. a team of horses harnessed one behind the other.

  5. a two-wheeled carriage with a high driver's seat, drawn by two or more horses so harnessed.

  6. any of various mechanisms having a tandem arrangement.

idioms

  1. in tandem,

    1. in single file.

      They swam in tandem.

    2. in association or partnership.

tandem British  
/ ˈtændəm /

noun

  1. a bicycle with two sets of pedals and two saddles, arranged one behind the other for two riders

  2. a two-wheeled carriage drawn by two horses harnessed one behind the other

  3. a team of two horses so harnessed

  4. any arrangement of two things in which one is placed behind the other

  5. together or in conjunction

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. used as, used in, or routed through an intermediate automatic telephone exchange

    a tandem exchange

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adverb

  1. one behind the other

    to ride tandem

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms


Etymology

Origin of tandem

First recorded in 1735–45; special use (originally facetious) of Latin tandem “at length, finally,” equivalent to tam “so far” + -dem, demonstrative suffix


Explanation

Tandem describes an arrangement where people or animals are in formation, one behind the other. Couples attached at the hip sometimes like to ride tandem bicycles, which allow two people to pedal the same bike. How cute. In 1785, tandem first came into existence as a noun meaning “carriage pulled by horses harnessed one behind the other.” About a hundred years later, people started to use tandem to refer to bicycles with two seats. This type of bicycle has two sets of pedals and two seats, but only one set of wheels. To transform tandem into an adverb, just stick in in front of it. "In tandem" can just mean "together" — like two departments working in tandem on a project.

Keep Reading on Vocabulary.com

Vocabulary lists containing tandem

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Norris was in a position to make a legitimate move, but they came together, pirouetted in tandem, Piastri into the barriers and out of the race and Norris slipping down to eighth.

From BBC ● Oct. 10, 2026

There are seagull puppets, a tandem bicycle, an oil stain in the shape of a rabbit, a meteorite.

From Los Angeles Times ● Oct. 7, 2026

At the same time, semiconductors and software names have been trending higher in tandem recently.

From MarketWatch ● Oct. 6, 2026

The yield on the 10-year Treasury touched a fresh 24-year high, as a global bond rout and AI-investing boom ripple through markets in tandem.

From The Wall Street Journal ● Oct. 5, 2026

We will learn to forgive ourselves in tandem.

From "Please Ignore Vera Dietz" by A.S. King

But on Saturday, the Trojans improved front will be tested by one of the better running back tandems in college football.

From Los Angeles Times ● Oct. 17, 2025

He and Jaxon Smith-Njigba, who leads the league in receiving yards, look like they’ll be one of the game’s most formidable tandems for years to come.

From The Wall Street Journal ● Oct. 13, 2025

As well as standard racing bikes with modifications where required and tandems, the Para-cycling road programme also features handcycling and trike races.

From BBC ● Aug. 25, 2024

"We are taking perovskites to the finish line. If tandems work out well, they certainly have the potential to dominate the market and become the next generation of solar cells," he said.

From Science Daily ● Mar. 22, 2024

He is the genius of the fox terrier and the bulldog pipe; he rides to the hounds, and is apt in evading the vice-chancellor's regulations as to tandems and four-in-hands.

From An American at Oxford by John Corbin

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