Accuracy

Pronunciation

• US IPA: /ˈæk.jÉš.É™.si/

Origin

• First attested in the 1660s.
• accurate + -cy

Full definition of accuracy

Noun

1. The state of being accurate; freedom from mistakes, this exemption arising from carefulness; exactness; nicety; correctness
   The value of testimony depends on its accuracy.
• 1827, Thomas Reid, Essays on the Powers of the Human Mind, Its professed end logic, is to teach men to think, to judge, and to reason, with precision and accuracy.
• 1856, Dionysius Lardner, Popular Lectures on Science and Art, The efficiency of the instrument will also depend upon the accuracy with which the piston fits the bottom and sides of the barrel. When the piston is depressed to the bottom, it is considered in theory to be in absolute contact, so as to exclude every particle of air from the space between it and the bottom.
• 1907, Robert Chambers, The Younger Set Chapter 8, At her invitation he outlined for her the succeeding chapters with terse military accuracy ; and what she liked best and best understood was avoidance of that false modesty which condescends, turning technicality into pabulum.
2. Exact conformity to truth, or to a rule or model; degree of conformity of a measure to a true or standard value.

Synonyms

• correctness
• truthfulness

Antonyms

• inaccuracy