the degree of interrelationship or homogeneity among the items on a test, such that they are consistent with one another and measuring the same thing. Internal consistency is an index of the reliability of a test. Also called internal consistency reliability; internal reliability. See also interitem correlation.
n. an inflammation of the pancreas, marked by severe abdominal pain and caused by biliary tract disorders (e.g., gallstones), alcoholism, viral infection, or reactions to certain drugs (e.g., some antipsychotic agents).