n.
Pronunciation: ' a-ky ə -r ə -s ē , ' a-k( ə -)r ə -
Function: noun
Inflected Form: plural -cies
Date: 1662
1 : freedom from mistake or error : CORRECTNESS
2 a : conformity to truth or to a standard or model : EXACTNESS b : degree of conformity of a measure to a standard or a true value ― compare PRECISION 2a