serving to form, compose, or make up; elemental; component.-having the power of electing or appointing.-the person or thing which constitutes, determines, or constructs.-that which constitutes or composes, as a part, or an essential part; a component; an element.-one for whom another acts; especially, one who is represented by another in a legislative assembly; -- correlative to representative.-a person who appoints another to act for him as attorney in fact.