Definitions
1.NounSomething that absorbs.
A device which causes gas or vapor to be absorbed by a liquid. .mw-parser-output .defdate{font-size:smaller}
A material that absorbs neutrons in a reactor.
2.NounA device which causes gas or vapor to be absorbed by a liquid. .mw-parser-output .defdate{font-size:smaller}
3.NounA material that absorbs neutrons in a reactor.
4.NounA person who absorbs.
5.NounA set that, under suitable transformations, can contain any set from a given class within a topological space. English Wikipedia has an article on:Absorbing setWikipedia