1. Unvarying or stable conduct or care: After Carol's operation, her continuously good health depended on her consistency with the suggested treatment program and directives by her doctor.
2. The quality of obtaining a certain level of achievement which does not change much in caliber or standard over time: Mary was the only student who showed total consistency with attaining the best grades on her exams in her class.
3. The degree of thickness of a substance which holds something together: Because the consistency of the cookie dough was too thin, Lynn had to add more flour.