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trader

American  
[trey-der] / ˈtreɪ dər /

noun

  • traders
    plural
  1. a person who trades; a merchant or businessperson.

  2. a ship used in trade, especially foreign trade.

  3. a member of a stock exchange trading privately and not on behalf of customers.


trader British  
/ ˈtreɪdə /

noun

  1. a person who engages in trade; dealer; merchant

  2. a vessel regularly employed in foreign or coastal trade

  3. stock exchange a member who operates mainly on his or her own account rather than for customers' accounts

"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

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Nouns

Etymology

Origin of trader

First recorded in 1575–85; trade + -er 1

Explanation

A trader is a person who either buys goods and resells them, like a merchant who runs a store or a person who buys and sells stocks and bonds. The original meaning of trader was "one engaged in commerce," meaning someone who makes a living buying things and selling them at a profit. Originally, traders would literally trade goods for other goods, while today most of them trade goods for money. Financial traders work solely with money, buying and selling currency, stocks, bonds, and funds.

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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:

A fee imposed on a large retailer is very different from one imposed on a tiny shop or informal trader.

From BBC Aug. 16, 2026

The president and director of Laniakea is Matthew Wage, a Jane Street trader, tax filings show.

From The Wall Street Journal Aug. 5, 2026

As the Houston energy trader struggled and racked up $30 billion in debt, chief financial officer Andrew Fastow thought he found a way to keep it off Enron’s books.

From Los Angeles Times Aug. 5, 2026

Now imagine you’re a stock or commodities trader who relies on high-speed deals to make a living.

From Slate Aug. 3, 2026

He wasn’t just a good bond trader, he was a great bond trader.

From "The Big Short" by Michael Lewis

The spread between the cost of producing a barrel of gasoline and the cost of the crude oil needed to produce it — known among traders as the “crack spread” — has widened sharply.

From MarketWatch Aug. 16, 2026

Perkins was candid about tough moments, including what it was like to be hit with giant margin calls on positions, something traders avoid discussing.

From The Wall Street Journal Aug. 15, 2026

"A few weeks ago, traders were being asked to justify why the Fed should not hike again," said Stephen Innes, global strategist at Quintex Intel.

From Barron's Aug. 14, 2026

The analysts wrote in a note on Thursday that Applied Materials also faced gross-margin pressure in the near term because of its boost in capital expenditures, a factor that may have also spooked traders.

From MarketWatch Aug. 14, 2026

Bond traders could exploit inside information without worrying that they would be caught.

From "The Big Short" by Michael Lewis

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