Definition of Constituent

• a member of a constituency; a citizen who is represented in a government by officials for whom he or she votes; "needs continued support by constituents to be re-elected"
• (grammar) a word or phrase or clause forming part of a larger grammatical construction
• an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system; "spare components for cars"; "a component or constituent element of a system"