1. 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"
2. 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"
3. (grammar) a word or phrase or clause forming part of a larger grammatical construction
4. an abstract part of something;
"jealousy was a component of his character"
"two constituents of a musical composition are melody and harmony"