reliability
Dictionary Definition
The quality or state of being reliable; the extent to which an experiment, test, or measuring procedure yields the same results on repeated trials
Committee Definition
The degree to which a scientific research is reproducible. A study is said to have a high reliability if it produces similar results under consistent conditions.
Domain Specific Usage
Reliability is the overall consistency of a measure (test-retest reliability);
Reliability theory describes the probability of a system completing its expected function during an interval of time