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factor in

British  

verb

  1. (tr, adverb) to take account of (something) when making a calculation

"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

factor in Idioms  
  1. Figure in, include as a basic element. For example, In preparing the schedule we factored in vacation and sick days. This term comes from mathematics. [Mid-1900s]


Example Sentences

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Take “ego,” a word that is strangely absent from Mr. Diamond’s book but is an important factor in determining some of the most consequential actions of leaders.

From The Wall Street Journal Sep. 16, 2026

The National Crime Agency has said law enforcement had been a "key factor" in getting the numbers down.

From BBC Sep. 15, 2026

He will also have to factor in his salary and the earnings test.

From MarketWatch Sep. 15, 2026

The OpenAI agents are built for different purposes, but an underappreciated factor in their going hacker mode is that the company’s own staffers were negligent and careless in monitoring their own experiments.

From Slate Sep. 15, 2026

That contrast between the immediate virtues of wheat and barley and the difficulties posed by teosinte may have been a significant factor in the differing developments of New World and Eurasian human societies.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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