(law) A party who appeals the decision of a lower court.

The process of finding a solution to a problem by trying many possible solutions and learning from mistakes until success is attained.

A mistake made during the process of typing, especially one caused by a slip of the fingers. / A mistake made during the process of typesetting.

(biology) The extinction of an organism (usually microorganisms) due to excessive RNA mutations.

(mathematics) The difference (sometimes defined to be the absolute difference) between the measured or inferred value of a quantity and its true value.

(geometry, geomagnetism) The combination of variation and deviation which is the horizontal angle between the direction indicated by a magnetic compass and true north.

(computing) A message displayed when a failure condition occurs, usually on a computer or device.

(sciences) A bar used on a graph to indicate the range of one standard deviation in the result of an experimental measurement.

(statistics) An expression of the lack of precision in the results obtained from a sample. / An amount, beyond the calculated minimum, added for safety.

(statistics) The error caused by observing a sample instead of the whole population.