Con*stit"u*ent, n. 1. The person or thing which constitutes, determines, or constructs.

Their first composure and origination require a higher and nobler constituent than chance.
Sir M. Hale

2. That which constitutes or composes, as a part, or an essential part; a component; an element.

We know how to bring these constituents together, and to cause them to form water.

3. One for whom another acts; especially, one who is represented by another in a legislative assembly; -- correlative to representative.

The electors in the district of a representative in Congress, or in the legislature of a State, are termed his constituents.

To appeal from the representatives to the constituents.

4. (Law) A person who appoints another to act for him as attorney in fact. Burrill.

Con*stit"u*ent (?), a. [L. constituens, -entis, p. pr. See Constitute.] 1. Serving to form, compose, or make up; elemental; component.

Body, soul, and reason are the three parts necessarily constituent of a man.

2. Having the power of electing or appointing.

A question of right arises between the constituent and representative body.