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precision

American  
[pri-sizh-uhn] / prɪˈsɪʒ ən /

noun

  1. the state or quality of being precise.

  2. accuracy; exactness.

    to arrive at an estimate with precision.

    Synonyms:
    rigor
  3. mechanical or scientific exactness.

    a lens ground with precision.

  4. punctiliousness; strictness.

    precision in one's business dealings.

  5. Mathematics. the degree to which the correctness of a quantity is expressed.

  6. Chemistry, Physics. the extent to which a given set of measurements of the same sample agree with their mean.


adjective

  1. of, relating to, or characterized by precision.

    precision swimming; precision instruments for aircraft.

precision British  
/ prɪˈsɪʒən /

noun

  1. the quality of being precise; accuracy

  2. (modifier) characterized by or having a high degree of exactness

    precision grinding

    a precision instrument

"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

Etymology

Origin of precision

First recorded in 1630–40; from Latin praecīsiōn-, stem of praecīsiō “cutoff”; equivalent to precise + -ion

Explanation

Use the noun precision to describe something that's exact, such as the work of a carpenter who's made 100 identical pieces of railing for a grand staircase. Precision is similar to perfection in that both words suggest that something could not possibly be better. However, perfection describes something that's flawless, such as a beautiful sunset. Precision, on the other hand, is more about accuracy, like computing the exact second that the perfect sunset will occur.

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