A-dŏpt’er, n.
n. 1. One who adopts.
Sense 2. (Chem.) 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, or to increase the length of the neck of a retort. [Spelled also adapter.]