1. [adjective] Being a part, or component of a whole
2. [adjective] Authorized to make a constitution
3. [noun] A part, or component of a whole
4. [noun] The person or thing which constitutes, determines, or constructs.
5. [noun] A resident of a place represented by an elected official.
6. [noun] (legal) One who appoints another to act for him as attorney in fact.
7. [noun] (grammar) A functional element of a phrase or clause.
8. [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; 'spare components for cars'; 'a component or constituent element of a system'.
9. [noun] 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'.
10. [noun] Something determined in relation to something that includes it; 'he wanted to feel a part of something bigger than himself'; 'I read a portion of the manuscript'; 'the smaller component is hard to reach'; 'the animal constituent of plankton'.
11. [noun] (grammar) a word or phrase or clause forming part of a larger grammatical construction.
12. [noun] An abstract part of something; 'jealousy was a component of his character'; 'two constituents of a musical composition are melody and harmony'; 'the grammatical elements of a sentence'; 'a key factor in her success'; 'humor: an effective ingredient of a speech'.
13. [adjective] Constitutional in the structure of something (especially your physical makeup).