1.nounA pattern, a way of doing something, especially a pattern of thought, a system of beliefs, a conceptual framework.
"Thomas Kuhn's landmark “The Structure of Scientific Revolutions” got people talking about paradigm shifts, to the point the word itself now suggests an incomplete or biased perspective."
2.nounAn example serving as the model for such a pattern.
3.nounA set of all forms which contain a common element, especially the set of all inflectional forms of a word or a particular grammatical category.