noun: (grammar) a word or phrase or clause forming part of a larger grammatical construction
noun: a member of a constituency; a citizen who is represented in a government by officials for whom he or she votes
Example: "Needs continued support by constituents to be re-elected"
noun: 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
Example: "A component or constituent element of a system"
noun: an abstract part of something
Example: "Two constituents of a musical composition are melody and harmony"