adopter(n = noun.person) adoptive parent - a person who adopts a child of other parents as his or her own child;
is a kind of parent
Derived form verb adopt5
1. One who adopts. [1913 Webster]
2. A receiver, with two necks, opposite to each other, one of which admits the neck of a retort, and the other is joined to another receiver. It is used in distillations, to give more space to elastic vapors, to increase the length of the neck of a retort, or to unite two vessels whose openings have different diameters. [1913 Webster]