∞ generated and posted on 2016.01.09 ∞
Closeness to correctness.
If the true answer is 5, then an approximation of 4 is more accurate than an approximation of 1. It the true answer is orange then an answer of red is more accurate than one of blue.
If in determining a bacterial unknown, if the actual organism is Salmonella then a determination that instead it is Proteus (a fellow Gram-negative rod and enteric) is more accurate than a determination of Staphylococcus (a Gram-positive coccus) or, indeed, Saccharomyces (a eukaryote rather than a prokaryote).
Of course, answers of 5, orange, and Salmonella would be most accurate of all!
Contrast with precision.