Толковый словарь английского языка - precision

I. noun Date: 1740 the quality or state of being precise ; exactness, 2. the degree of refinement with which an operation is performed or a measurement stated, the accuracy (as in binary or decimal places) with which a number can be represented usually expressed in terms of the number of computer words available for representation , relevance 2, ~ist noun II. adjective Date: 1875 adapted for extremely accurate measurement or operation, held to low tolerance in manufacture, marked by ~ of execution