Definition of precisions:
(n) :
(loosely) The state of being precise or exact; especially, both exact and accurate.
(n) :
(strictly) The ability of a measurement to be reproduced consistently.
(adj) :
Made, or characterized by accuracy.
(n) :
(mathematics) The number of significant digits to which a value may be measured reliably.
(adj) :
Used for exact or precise measurement.
(n) :
(bridge) A bidding system that makes use of many artificial bids to describe a hand quite precisely.