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[pri-sizh-uh n] /prɪˈsɪʒ ən/
the state or quality of being precise.
accuracy; exactness:
to arrive at an estimate with precision.
mechanical or scientific exactness:
a lens ground with precision.
punctiliousness; strictness:
precision in one's business dealings.
Mathematics. the degree to which the correctness of a quantity is expressed.
Compare accuracy (def 3).
Chemistry, Physics. the extent to which a given set of measurements of the same sample agree with their mean.
Compare accuracy (def 2).
of, relating to, or characterized by precision:
precision swimming; precision instruments for aircraft.
Origin of precision
1630-40; < Latin praecīsiōn- (stem of praecīsiō) a cutting off. See precise, -ion
Related forms
precisional, adjective
overprecision, noun
ultraprecision, noun
2. preciseness, meticulousness, rigor. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for precision
Contemporary Examples
Historical Examples
  • The very lines of his face were drawn with the precision, the finality, of a geometrical figure.

    The Ancient Law Ellen Glasgow
  • The most obvious is to hit him smartly and with precision on the exact tip of the nose.

    Alarms and Discursions G. K. Chesterton
  • The real question at issue will then stand out in clear relief, and precision will be given to the entire discussion.

    Christianity and Greek Philosophy Benjamin Franklin Cocker
  • Hence he moved with rapidity and precision, and was never taken by surprise.

  • At the expense of swollen and painful lips, he managed this sufficiently to play the music required with ease and precision.

British Dictionary definitions for precision


the quality of being precise; accuracy
(modifier) characterized by or having a high degree of exactness: precision grinding, a precision instrument
Derived Forms
precisionism, noun
precisionist, noun
Word Origin
C17: from Latin praecīsiō a cutting off; see precise
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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Word Origin and History for precision

1630s, "a cutting off (mentally), abstraction," from French précision (16c.) and directly from Latin praecisionem (nominative praecisio) "a cutting off," noun of action from past participle stem of praecidere (see precise). Meaning "preciseness" is from 1740.

Online Etymology Dictionary, © 2010 Douglas Harper
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precision in Technology

The number of decimal places to which a number is computed.
Compare accuracy.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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