2 definitions found From WordNet (r) 2.0 [wn]: adopter noun: a person who adopts a child of other parents as his or her own child [syn: {adoptive parent}] From The Collaborative International Dictionary of English v.0.44 [gcide]: Adopter \A*dopt"er\, noun 1. One who adopts. 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, to increase the length of the neck of a retort, or to unite two vessels whose openings have different diameters. [Written also {adapter}.]

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