constitutioncon·sti·tu·tion /ˌkɒnstɪˈtjuːʃənˌkɑːnstɪˈtuː-/ noun [countableC]1LAWthe system of basic laws and principles that a DEMOCRATIC country is governed by, which cannot easily be changed by the political party in powerThe First Amendment of the American Constitution guarantees freedom of speech.
2COMMERCEthe system of rules and principles that an organization must followthe article giving general managerial powers to company directors which is found in the constitution of most companies
3the way that something is formed, especially the people or parts that make it upThis change would fundamentally alter the constitution of the company.